Rapid prototyping (RP) uses additive manufacturing techniques to quickly produce physical prototypes directly from 3D CAD models. There are several RP technologies categorized by the form of the starting material - liquid, solid or powder. RP allows faster prototyping compared to traditional methods and is useful for design validation, engineering analysis, tooling applications and small batch manufacturing. However, RP parts can have reduced accuracy and mechanical properties compared to final production components.
This document discusses rapid prototyping (RP), which uses 3D printing technologies to quickly produce physical prototypes directly from 3D CAD models. It begins by introducing RP and its benefits. It then describes common RP techniques like stereolithography, fused deposition modeling, and selective laser sintering. These techniques are classified based on the form of their starting materials as liquid-based, solid-based, or powder-based. The document concludes by discussing applications of RP in design, engineering analysis, and tooling manufacturing.
The presentation covers all the methods of Rapid protoyping and various aspects related to it.
The Topics covered in the presentation are
1) Droplet Deposition Manufacturing
2) Laminated Object Manufacturing
3) Fused Deposition Modeling
4) Selective Laser Manufacturing
5) Sterolithography
The document discusses rapid prototyping (RP), which allows prototypes to be made from a CAD model in hours or days rather than weeks. It describes various RP technologies including stereolithography, solid ground curing, droplet deposition manufacturing, laminated object manufacturing, fused deposition modeling, and selective laser sintering. These technologies differ in their starting materials, which can be liquids, solids like sheets, or powders, and how layers are added to build the final part in a layer-by-layer process from the CAD model.
very good to have a this type of context in theRemember that a 3D printer works by depositing raw material layer by layer along the X, Y and Z axis. The accuracy of the 3D printer therefore depends upon the minimum distance the nozzle can travel vertically (the Z axis). Minimum the distance it can move, more the points along the sinusoid that it can capture, and better the accuracy.For Stratasys 3D printers, which are the pioneers of the FDM printers, the current best possible dimensional accuracy is about 0.127 mm. Of course, the choice of raw material too plays an important part in achieving dimensional stability. It should also be remembered that the accuracy comes at the cost of printing time required.
A few advantages of FDM 3D printers include: slideshare FDM 3D Printers find application in:
creating prototypes for Fit, Form and Function testing
rapid tooling patterns and mould inserts
creating and testing any parts that work under thermal loads
production of precise and complex end-use parts e.g. jigs & fixtures
Sectors that use FDM 3D Printers include:
Automotive
Aerospace
Manufacturing
Industrial
Medical
Architecture
Consumer Goods
Fashion
Education & Research
Overall, FDM 3D printers give a very high value for money and a
prototype , type of 3D printer and MFG.pptxahmedtito21
The document discusses various rapid prototyping technologies including stereolithography, fused deposition modeling, laminated object manufacturing, selective laser sintering, and three dimensional printing. It provides details on how each technology works and compares their advantages and limitations. The document also discusses applications of rapid prototyping technologies, factors for selecting appropriate technologies, and challenges that need to be addressed to improve the technologies.
Rapid prototyping uses 3D printing technologies to quickly produce physical models from 3D CAD files. It allows engineers to test designs before full production. The document discusses the rapid prototyping process which includes: 1) Creating a CAD model, 2) Converting it to STL format, 3) Slicing the STL file into layers, 4) Constructing the model layer-by-layer using different techniques like stereolithography, fused deposition modeling or selective laser sintering, and 5) Cleaning and finishing the prototype. Rapid prototyping reduces costs and development time by finding design flaws earlier compared to traditional prototyping methods.
Rapid prototyping technologies allow engineers to create physical prototypes of designs prior to full production. The document discusses the rapid prototyping process which involves:
1. Creating a CAD model and converting it to STL format.
2. Slicing the STL file into thin layers and constructing the prototype layer-by-layer using different techniques like stereolithography, selective laser sintering, or fused deposition modeling.
3. Post-processing the prototype by removing supports, cleaning, and finishing the surface.
Specific rapid prototyping methods like stereolithography, selective laser sintering, and fused deposition modeling are described in detail. The document also discusses applications and limitations of rapid
This document discusses rapid prototyping techniques such as stereolithography, selective laser sintering, fused deposition modeling, laminated object manufacturing, and 3D printing. It provides details on the processes, companies that develop the technologies, and applications. Rapid prototyping allows for quick fabrication of geometric shapes to create prototypes for testing form, fit, and function without using the final production materials or processes. STL files are commonly used as the standard file format for rapid prototyping systems.
This document discusses rapid prototyping (RP), which uses 3D printing technologies to quickly produce physical prototypes directly from 3D CAD models. It begins by introducing RP and its benefits. It then describes common RP techniques like stereolithography, fused deposition modeling, and selective laser sintering. These techniques are classified based on the form of their starting materials as liquid-based, solid-based, or powder-based. The document concludes by discussing applications of RP in design, engineering analysis, and tooling manufacturing.
The presentation covers all the methods of Rapid protoyping and various aspects related to it.
The Topics covered in the presentation are
1) Droplet Deposition Manufacturing
2) Laminated Object Manufacturing
3) Fused Deposition Modeling
4) Selective Laser Manufacturing
5) Sterolithography
The document discusses rapid prototyping (RP), which allows prototypes to be made from a CAD model in hours or days rather than weeks. It describes various RP technologies including stereolithography, solid ground curing, droplet deposition manufacturing, laminated object manufacturing, fused deposition modeling, and selective laser sintering. These technologies differ in their starting materials, which can be liquids, solids like sheets, or powders, and how layers are added to build the final part in a layer-by-layer process from the CAD model.
very good to have a this type of context in theRemember that a 3D printer works by depositing raw material layer by layer along the X, Y and Z axis. The accuracy of the 3D printer therefore depends upon the minimum distance the nozzle can travel vertically (the Z axis). Minimum the distance it can move, more the points along the sinusoid that it can capture, and better the accuracy.For Stratasys 3D printers, which are the pioneers of the FDM printers, the current best possible dimensional accuracy is about 0.127 mm. Of course, the choice of raw material too plays an important part in achieving dimensional stability. It should also be remembered that the accuracy comes at the cost of printing time required.
A few advantages of FDM 3D printers include: slideshare FDM 3D Printers find application in:
creating prototypes for Fit, Form and Function testing
rapid tooling patterns and mould inserts
creating and testing any parts that work under thermal loads
production of precise and complex end-use parts e.g. jigs & fixtures
Sectors that use FDM 3D Printers include:
Automotive
Aerospace
Manufacturing
Industrial
Medical
Architecture
Consumer Goods
Fashion
Education & Research
Overall, FDM 3D printers give a very high value for money and a
prototype , type of 3D printer and MFG.pptxahmedtito21
The document discusses various rapid prototyping technologies including stereolithography, fused deposition modeling, laminated object manufacturing, selective laser sintering, and three dimensional printing. It provides details on how each technology works and compares their advantages and limitations. The document also discusses applications of rapid prototyping technologies, factors for selecting appropriate technologies, and challenges that need to be addressed to improve the technologies.
Rapid prototyping uses 3D printing technologies to quickly produce physical models from 3D CAD files. It allows engineers to test designs before full production. The document discusses the rapid prototyping process which includes: 1) Creating a CAD model, 2) Converting it to STL format, 3) Slicing the STL file into layers, 4) Constructing the model layer-by-layer using different techniques like stereolithography, fused deposition modeling or selective laser sintering, and 5) Cleaning and finishing the prototype. Rapid prototyping reduces costs and development time by finding design flaws earlier compared to traditional prototyping methods.
Rapid prototyping technologies allow engineers to create physical prototypes of designs prior to full production. The document discusses the rapid prototyping process which involves:
1. Creating a CAD model and converting it to STL format.
2. Slicing the STL file into thin layers and constructing the prototype layer-by-layer using different techniques like stereolithography, selective laser sintering, or fused deposition modeling.
3. Post-processing the prototype by removing supports, cleaning, and finishing the surface.
Specific rapid prototyping methods like stereolithography, selective laser sintering, and fused deposition modeling are described in detail. The document also discusses applications and limitations of rapid
This document discusses rapid prototyping techniques such as stereolithography, selective laser sintering, fused deposition modeling, laminated object manufacturing, and 3D printing. It provides details on the processes, companies that develop the technologies, and applications. Rapid prototyping allows for quick fabrication of geometric shapes to create prototypes for testing form, fit, and function without using the final production materials or processes. STL files are commonly used as the standard file format for rapid prototyping systems.
Product Development for Future using Rapid Prototyping TechniquesIRJET Journal
This document discusses rapid prototyping techniques for product development. It begins by defining rapid prototyping as a process that helps improve product quality and reduce prototyping costs by quickly building models from 3D computer designs. The two main types of rapid prototyping are additive manufacturing, which adds material to build a geometry, and subtractive manufacturing, which removes material from a solid. The document then examines several specific rapid prototyping techniques like stereolithography, laminated object manufacturing, selective laser sintering, 3D inkjet printing, and fused deposition modeling. It concludes that future developments in rapid prototyping will include making larger parts, improving surface finish and accuracy, and using new materials to further enhance the product
Design Development Experimental Approach of Industrial Product Enhancement Pr...IJMER
This document discusses stereo lithography (SLA), a type of rapid prototyping. SLA uses a laser to solidify liquid photopolymer resin layer by layer based on a 3D CAD model. The key steps are: 1) creating a CAD model; 2) slicing the model into layers; 3) using a laser to solidify each layer on top of the previous one. SLA can produce prototypes faster and cheaper than conventional methods. However, the layered construction results in stair-stepping on slanted surfaces that requires post-processing smoothing.
This document discusses rapid prototyping and provides details on various rapid prototyping techniques. It begins by defining what a prototype is and explaining the development of rapid prototyping from manual methods to soft and then rapid prototyping using additive manufacturing. Specific rapid prototyping techniques covered include stereolithography (SLA), selective laser sintering (SLS), laminated object manufacturing (LOM), and fused deposition modeling (FDM). Applications of rapid prototyping include design, engineering analysis, and tooling. Advantages are listed as fast, accurate production with minimal material waste, while limitations include staircase effects and cost.
The document discusses rapid prototyping techniques. It begins by defining what a prototype is and the purposes of prototypes. It then discusses the development of rapid prototyping from manual prototyping to soft/virtual prototyping to rapid prototyping using computer-aided design. Common rapid prototyping techniques are described such as stereolithography, fused deposition modeling, selective laser sintering, and 3D printing. Applications and advantages of rapid prototyping are also summarized.
Rapid prototyping is an additive manufacturing process that builds 3D models layer by layer directly from CAD data. It allows for quick fabrication of parts and reduces development time and costly mistakes compared to conventional machining. The document discusses various rapid prototyping technologies such as stereolithography, selective laser sintering, and fused deposition modeling. It provides details on the working, advantages, applications, and history of these additive manufacturing methods.
This document provides information on rapid prototyping. It defines rapid prototyping as an additive manufacturing process that fabricates a physical model layer by layer directly from 3D CAD data. The document discusses several rapid prototyping technologies including stereolithography, selective laser sintering, and fused deposition modeling. It explains the basic principles, materials, and processes for each technique. The document also covers the history and applications of rapid prototyping.
Rapid prototyping uses layer-by-layer additive manufacturing techniques to quickly produce physical prototypes directly from 3D CAD models. It offers significant time and cost savings over traditional subtractive methods. The basic rapid prototyping process involves (1) creating a CAD model, (2) converting it to STL format, (3) slicing the digital model into thin layers, and (4) constructing the physical model layer-by-layer using materials like polymers, paper or powdered metals. This allows for the fabrication of objects with complex internal features.
The document provides information on rapid prototyping and different rapid prototyping technologies. It begins with defining what a prototype is and why prototypes are developed. It then discusses the development of rapid prototyping, including manual, soft, and rapid prototyping phases. Key rapid prototyping technologies are described such as stereolithography, laminated object manufacturing, fused deposition modeling, and selective laser sintering. Applications and basic principles of rapid prototyping are also covered.
This document provides an overview of rapid prototyping (RP). It defines RP as a family of fabrication methods to quickly make engineering prototypes based on CAD models with minimum lead times. The document discusses the evolution of prototyping, the need for RP, different RP categories including material removal and addition processes, the steps to prepare RP control instructions from a CAD model, common RP technologies like stereolithography and fused deposition modeling, applications of RP in design, engineering analysis and tooling, and challenges with part accuracy and limited materials.
Rapid prototyping uses additive manufacturing processes to build 3D objects from CAD models in layers. There are several types of rapid prototyping technologies that differ in the form of starting material used - liquid-based, solid-based, or powder-based. Stereolithography (SLA) is a common liquid-based technique that uses a UV laser to cure liquid resin into layers to build a prototype. Prototypes allow designers to validate designs and engineers to conduct tests prior to full production.
Under the guidance of Mr. Ankit Bajpai, Sohan Kumar submitted a report on rapid prototyping techniques. The report defines rapid prototyping as a group of manufacturing processes that create a 3D physical object directly from a 3D CAD model. It discusses the basic rapid prototyping process of converting CAD models to STL format and building the model layer-by-layer. Major rapid prototyping techniques covered include stereolithography, laminated object manufacturing, selective laser sintering, and fused deposition modeling. The report concludes with applications of rapid prototyping in engineering, medicine, arts, and rapid tooling.
Rapid prototyping refers to technologies that can automatically construct physical models from CAD data. These technologies allow designers to quickly create tangible prototypes rather than just 2D pictures. The document discusses several rapid prototyping techniques including stereolithography, laminated object manufacturing, selective laser sintering, fused deposition modeling, solid ground curing, and 3D inkjet printing. All techniques involve slicing a 3D CAD model into layers and building the model layer-by-layer. Rapid prototyping enables faster and cheaper prototype production compared to traditional methods, facilitating improved product design and testing.
This document summarizes the process of rapid prototyping (RP). It begins with an introduction to RP and how it uses techniques like 3D printing to directly produce physical models from 3D CAD files in a layer-by-layer process. The document then outlines the typical 5-step RP workflow of creating a CAD file, converting it to STL format, slicing the digital model into layers, building the model one layer at a time, and finishing the prototype. Several common RP technologies are described like stereolithography, selective laser sintering, and fused deposition modeling. The document also discusses benefits of RP for product design like reducing costs and improving feedback. An example of using RP to fabricate a trans-tibial
Rapid Prototyping and Rapid Tooling.pdfParhanAkbar
This document discusses rapid prototyping and rapid tooling technologies. It begins with an introduction to why rapid prototyping is important for reducing product development time. It then defines rapid prototyping and rapid tooling as the generative layer-by-layer building of parts or molds directly from CAD data. The document provides an overview of various rapid prototyping systems categorized by the form of the starting material as liquid-based, solid-based, or powder-based. Examples of applications for rapid prototyping in design, engineering analysis, and tooling/manufacturing are also presented.
This document discusses various rapid prototyping and manufacturing techniques categorized by the type of material used - liquid, powder, or solid/foil based. Liquid based techniques discussed include stereolithography, which uses a laser to cure liquid resin into layers, and jetting systems, which use print heads to deposit both model and support materials. Powder based techniques like selective laser sintering fuse powdered materials using a laser. Solid/foil techniques such as fused deposition modeling deposit melted materials. The document provides details on the processes and materials used for different rapid prototyping methods.
3D printing is an additive manufacturing process where a three-dimensional object is created by laying down successive layers of material under computer control. The digital design is sliced into layers and the 3D printer builds the object by laying one layer at a time, joining each layer to the previous until the object is complete. There are several different methods of 3D printing including selective laser sintering (SLS), stereolithography, and fused deposition modeling (FDM). 3D printing enables the creation of complex geometries and customized parts and has applications in prototyping, modeling, design, research, and manufacturing custom parts. Some challenges facing the adoption of 3D printing include intellectual property issues and the potential for misuse to create
TYPES OF RAPID PROTOTYPING - ADDITIVE PROCESSNurhuda Hayati
This document discusses several types of rapid prototyping (RP) technologies. It describes the input, method, materials, and applications of RP. It provides details on liquid-based systems like stereolithography (SLA), solid-based systems like fused deposition modeling (FDM), and powder-based systems like selective laser sintering (SLS). For each approach, it outlines the basic process, common materials used, advantages, and limitations. The document serves as an overview of fundamental RP concepts and several important RP techniques.
This presentation is useful; for understanding the processes of rapid prototyping and its application.
Also this presentation includes the STL file format and problems with STL files.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
Product Development for Future using Rapid Prototyping TechniquesIRJET Journal
This document discusses rapid prototyping techniques for product development. It begins by defining rapid prototyping as a process that helps improve product quality and reduce prototyping costs by quickly building models from 3D computer designs. The two main types of rapid prototyping are additive manufacturing, which adds material to build a geometry, and subtractive manufacturing, which removes material from a solid. The document then examines several specific rapid prototyping techniques like stereolithography, laminated object manufacturing, selective laser sintering, 3D inkjet printing, and fused deposition modeling. It concludes that future developments in rapid prototyping will include making larger parts, improving surface finish and accuracy, and using new materials to further enhance the product
Design Development Experimental Approach of Industrial Product Enhancement Pr...IJMER
This document discusses stereo lithography (SLA), a type of rapid prototyping. SLA uses a laser to solidify liquid photopolymer resin layer by layer based on a 3D CAD model. The key steps are: 1) creating a CAD model; 2) slicing the model into layers; 3) using a laser to solidify each layer on top of the previous one. SLA can produce prototypes faster and cheaper than conventional methods. However, the layered construction results in stair-stepping on slanted surfaces that requires post-processing smoothing.
This document discusses rapid prototyping and provides details on various rapid prototyping techniques. It begins by defining what a prototype is and explaining the development of rapid prototyping from manual methods to soft and then rapid prototyping using additive manufacturing. Specific rapid prototyping techniques covered include stereolithography (SLA), selective laser sintering (SLS), laminated object manufacturing (LOM), and fused deposition modeling (FDM). Applications of rapid prototyping include design, engineering analysis, and tooling. Advantages are listed as fast, accurate production with minimal material waste, while limitations include staircase effects and cost.
The document discusses rapid prototyping techniques. It begins by defining what a prototype is and the purposes of prototypes. It then discusses the development of rapid prototyping from manual prototyping to soft/virtual prototyping to rapid prototyping using computer-aided design. Common rapid prototyping techniques are described such as stereolithography, fused deposition modeling, selective laser sintering, and 3D printing. Applications and advantages of rapid prototyping are also summarized.
Rapid prototyping is an additive manufacturing process that builds 3D models layer by layer directly from CAD data. It allows for quick fabrication of parts and reduces development time and costly mistakes compared to conventional machining. The document discusses various rapid prototyping technologies such as stereolithography, selective laser sintering, and fused deposition modeling. It provides details on the working, advantages, applications, and history of these additive manufacturing methods.
This document provides information on rapid prototyping. It defines rapid prototyping as an additive manufacturing process that fabricates a physical model layer by layer directly from 3D CAD data. The document discusses several rapid prototyping technologies including stereolithography, selective laser sintering, and fused deposition modeling. It explains the basic principles, materials, and processes for each technique. The document also covers the history and applications of rapid prototyping.
Rapid prototyping uses layer-by-layer additive manufacturing techniques to quickly produce physical prototypes directly from 3D CAD models. It offers significant time and cost savings over traditional subtractive methods. The basic rapid prototyping process involves (1) creating a CAD model, (2) converting it to STL format, (3) slicing the digital model into thin layers, and (4) constructing the physical model layer-by-layer using materials like polymers, paper or powdered metals. This allows for the fabrication of objects with complex internal features.
The document provides information on rapid prototyping and different rapid prototyping technologies. It begins with defining what a prototype is and why prototypes are developed. It then discusses the development of rapid prototyping, including manual, soft, and rapid prototyping phases. Key rapid prototyping technologies are described such as stereolithography, laminated object manufacturing, fused deposition modeling, and selective laser sintering. Applications and basic principles of rapid prototyping are also covered.
This document provides an overview of rapid prototyping (RP). It defines RP as a family of fabrication methods to quickly make engineering prototypes based on CAD models with minimum lead times. The document discusses the evolution of prototyping, the need for RP, different RP categories including material removal and addition processes, the steps to prepare RP control instructions from a CAD model, common RP technologies like stereolithography and fused deposition modeling, applications of RP in design, engineering analysis and tooling, and challenges with part accuracy and limited materials.
Rapid prototyping uses additive manufacturing processes to build 3D objects from CAD models in layers. There are several types of rapid prototyping technologies that differ in the form of starting material used - liquid-based, solid-based, or powder-based. Stereolithography (SLA) is a common liquid-based technique that uses a UV laser to cure liquid resin into layers to build a prototype. Prototypes allow designers to validate designs and engineers to conduct tests prior to full production.
Under the guidance of Mr. Ankit Bajpai, Sohan Kumar submitted a report on rapid prototyping techniques. The report defines rapid prototyping as a group of manufacturing processes that create a 3D physical object directly from a 3D CAD model. It discusses the basic rapid prototyping process of converting CAD models to STL format and building the model layer-by-layer. Major rapid prototyping techniques covered include stereolithography, laminated object manufacturing, selective laser sintering, and fused deposition modeling. The report concludes with applications of rapid prototyping in engineering, medicine, arts, and rapid tooling.
Rapid prototyping refers to technologies that can automatically construct physical models from CAD data. These technologies allow designers to quickly create tangible prototypes rather than just 2D pictures. The document discusses several rapid prototyping techniques including stereolithography, laminated object manufacturing, selective laser sintering, fused deposition modeling, solid ground curing, and 3D inkjet printing. All techniques involve slicing a 3D CAD model into layers and building the model layer-by-layer. Rapid prototyping enables faster and cheaper prototype production compared to traditional methods, facilitating improved product design and testing.
This document summarizes the process of rapid prototyping (RP). It begins with an introduction to RP and how it uses techniques like 3D printing to directly produce physical models from 3D CAD files in a layer-by-layer process. The document then outlines the typical 5-step RP workflow of creating a CAD file, converting it to STL format, slicing the digital model into layers, building the model one layer at a time, and finishing the prototype. Several common RP technologies are described like stereolithography, selective laser sintering, and fused deposition modeling. The document also discusses benefits of RP for product design like reducing costs and improving feedback. An example of using RP to fabricate a trans-tibial
Rapid Prototyping and Rapid Tooling.pdfParhanAkbar
This document discusses rapid prototyping and rapid tooling technologies. It begins with an introduction to why rapid prototyping is important for reducing product development time. It then defines rapid prototyping and rapid tooling as the generative layer-by-layer building of parts or molds directly from CAD data. The document provides an overview of various rapid prototyping systems categorized by the form of the starting material as liquid-based, solid-based, or powder-based. Examples of applications for rapid prototyping in design, engineering analysis, and tooling/manufacturing are also presented.
This document discusses various rapid prototyping and manufacturing techniques categorized by the type of material used - liquid, powder, or solid/foil based. Liquid based techniques discussed include stereolithography, which uses a laser to cure liquid resin into layers, and jetting systems, which use print heads to deposit both model and support materials. Powder based techniques like selective laser sintering fuse powdered materials using a laser. Solid/foil techniques such as fused deposition modeling deposit melted materials. The document provides details on the processes and materials used for different rapid prototyping methods.
3D printing is an additive manufacturing process where a three-dimensional object is created by laying down successive layers of material under computer control. The digital design is sliced into layers and the 3D printer builds the object by laying one layer at a time, joining each layer to the previous until the object is complete. There are several different methods of 3D printing including selective laser sintering (SLS), stereolithography, and fused deposition modeling (FDM). 3D printing enables the creation of complex geometries and customized parts and has applications in prototyping, modeling, design, research, and manufacturing custom parts. Some challenges facing the adoption of 3D printing include intellectual property issues and the potential for misuse to create
TYPES OF RAPID PROTOTYPING - ADDITIVE PROCESSNurhuda Hayati
This document discusses several types of rapid prototyping (RP) technologies. It describes the input, method, materials, and applications of RP. It provides details on liquid-based systems like stereolithography (SLA), solid-based systems like fused deposition modeling (FDM), and powder-based systems like selective laser sintering (SLS). For each approach, it outlines the basic process, common materials used, advantages, and limitations. The document serves as an overview of fundamental RP concepts and several important RP techniques.
This presentation is useful; for understanding the processes of rapid prototyping and its application.
Also this presentation includes the STL file format and problems with STL files.
Similar to rapid_prototyping classification.ppt (20)
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
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ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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2. Objective
1. Fundamentals of Rapid Prototyping
2. Rapid Prototyping Technologies
3. Applications and Benefits of Rapid Prototyping
4. Material of RP
5. Process sequence of RP
6. Method of manufacturing of RP
3. Rapid Prototyping (RP)
A family of fabrication processes developed to make
engineering prototypes in minimum lead time based
on a CAD model of the item
Traditional method is machining
Can require significant lead-times – several
weeks, depending on part complexity and
difficulty in ordering materials
RP allows a part to be made in hours or days, given
that a computer model of the part has been
generated on a CAD system
4. Why is Rapid Prototyping Important?
Product designers want to have a physical model of
a new part or product design rather than just a
computer model or line drawing
Creating a prototype is an integral step in design
A virtual prototype (a CAD model of the part) may
not be sufficient for the designer to visualize the
part adequately
Using RP to make the prototype, the designer
can see and feel the part and assess its merits
and shortcomings
5. RP – Two Basic Categories:
1. Material removal RP - machining, using a
dedicated CNC machine that is available to the
design department on short notice
Starting material is often wax
Easy to machine
Can be melted and resolidified
The CNC machines are often small - called
desktop machining
2. Material addition RP - adds layers of material one
at a time to build the solid part from bottom to top
6. Starting Materials in Material Addition RP
1. Liquid monomers that are cured layer by layer into solid
polymers
2. Powders that are aggregated and bonded layer by layer
3. Solid sheets that are laminated to create the solid part
Additional Methods
In addition to starting material, the various material
addition RP technologies use different methods of
building and adding layers to create the solid part
There is a correlation between starting material
and part building techniques
7. Steps to Prepare Control Instructions
1. Geometric modeling - model the component on a
CAD system to define its enclosed volume
2. Tessellation of the geometric model - the CAD
model is converted into a computerized format that
approximates its surfaces by facets (triangles or
polygons)
3. Slicing of the model into layers - computerized
model is sliced into closely-spaced parallel
horizontal layers
9. Conversion of a solid model of an object into layers (only
one layer is shown).
Solid Model to Layers
10. More About Rapid Prototyping
Alternative names for RP:
Layer manufacturing
Direct CAD manufacturing
Solid freeform fabrication
Rapid prototyping and manufacturing (RPM)
RP technologies are being used increasingly to
make production parts and production tooling, not
just prototypes
11. Classification of RP Technologies
There are various ways to classify the RP
techniques that have currently been developed
The RP classification used here is based on the
form of the starting material:
1. Liquid-based
2. Solid-based
3. Powder-based
12. 1- Liquid-Based Rapid Prototyping Systems
Starting material is a liquid
About a dozen RP technologies are in this category
Includes the following processes:
1.1 Stereolithography
1.2 Solid ground curing
1.3 Droplet deposition manufacturing
13. 1.1-Stereolithography (STL)
RP process for fabricating a solid plastic part out of a
photosensitive liquid polymer using a directed laser
beam to solidify the polymer
Part fabrication is accomplished as a series of layers
- each layer is added onto the previous layer to
gradually build the 3-D geometry
The first addition RP technology - introduced 1988
by 3D Systems Inc. based on the work of Charles
Hull
More installations than any other RP method
14. Stereolithography: (1) at the start of the process, in which the initial layer
is added to the platform; and (2) after several layers have been added
so that the part geometry gradually takes form.
Stereolithography
16. Facts about STL
Each layer is 0.076 mm to 0.50 mm (0.003 in to
0.020 in.) thick
Thinner layers provide better resolution and more
intricate shapes; but processing time is longer
Starting materials are liquid monomers
Polymerization occurs on exposure to UV light
produced by laser scanning beam
Scanning speeds ~ 500 to 2500 mm/s
17. Part Build Time in STL
Time to complete a single layer :
where Ti = time to complete layer i; Ai = area of
layer i; v = average scanning speed of the laser
beam at the surface; D = diameter of the “spot
size,” assumed circular; and Td = delay time
between layers to reposition the worktable
d
i
i T
vD
A
T
18. Part Build Time in STL - continued
Once the Ti values have been determined for all layers,
then the build cycle time is:
where Tc = STL build cycle time; and nl =
number of layers used to approximate the part
Time to build a part ranges from one hour for
small parts of simple geometry up to several
dozen hours for complex parts
i
n
i
i
c T
T
1
19. 1.2- Solid Ground Curing (SGC)
Like stereolithography, SGC works by curing a
photosensitive polymer layer by layer to create a
solid model based on CAD geometric data
Instead of using a scanning laser beam to cure a
given layer, the entire layer is exposed to a UV
source through a mask above the liquid polymer
Hardening takes 2 to 3 s for each layer
20. Figure 34.4 SGC
steps for each
layer: (1) mask
preparation, (2)
applying liquid
photopolymer
layer,(3) mask
positioning and
exposure of layer,
(4) uncured
polymer removed
from surface, (5)
wax filling, (6)
milling for flatness
and thickness.
Solid Ground Curing
21. Facts about SGC
Sequence for each layer takes about 90 seconds
Time to produce a part by SGC is claimed to be
about eight times faster than other RP systems
The solid cubic form created in SGC consists of solid
polymer and wax
The wax provides support for fragile and
overhanging features of the part during fabrication,
but can be melted away later to leave the free-
standing part
22. 1.3- Droplet Deposition Manufacturing (DDM)
Starting material is melted and small droplets are shot
by a nozzle onto previously formed layer
Droplets cold weld to surface to form a new layer
Deposition for each layer controlled by a moving x-y
nozzle whose path is based on a cross section of a
CAD geometric model that is sliced into layers
Work materials include wax and thermoplastics
24. 2- Solid-Based Rapid Prototyping Systems
Starting material is a solid
Solid-based RP systems include the following
processes:
2.1- Laminated object manufacturing
2.2- Fused deposition modeling
25. 2.1- Laminated Object Manufacturing (LOM)
Solid physical model made by stacking layers of sheet
stock, each an outline of the cross-sectional shape
of a CAD model that is sliced into layers
Starting sheet stock includes paper, plastic,
cellulose, metals, or fiber-reinforced materials
The sheet is usually supplied with adhesive backing
as rolls that are spooled between two reels
After cutting, excess material in the layer remains in
place to support the part during building
27. 2.2- Fused Deposition Modeling (FDM)
RP process in which a long filament of wax or polymer
is extruded onto existing part surface from a
workhead to complete each new layer
Workhead is controlled in the x-y plane during each
layer and then moves up by a distance equal to one
layer in the z-direction
Extrudate is solidified and cold welded to the cooler
part surface in about 0.1 s
Part is fabricated from the base up, using a layer-by-
layer procedure
28. 3- Powder-Based RP Systems
Starting material is a powder
Powder-based RP systems include the following:
3.1- Selective laser sintering
3.2- Three dimensional printing
29. 3.1- Selective Laser Sintering (SLS)
Moving laser beam sinters heat-fusible powders in
areas corresponding to the CAD geometry model
one layer at a time to build the solid part
After each layer is completed, a new layer of loose
powders is spread across the surface
Layer by layer, the powders are gradually bonded by
the laser beam into a solid mass that forms the 3-D
part geometry
In areas not sintered, the powders are loose and can
be poured out of completed part
30. 3.2- Three Dimensional Printing (3DP)
Part is built layer-by-layer using an ink-jet printer to
eject adhesive bonding material onto successive
layers of powders
Binder is deposited in areas corresponding to the
cross sections of part, as determined by slicing the
CAD geometric model into layers
The binder holds the powders together to form the
solid part, while the unbonded powders remain loose
to be removed later
To further strengthen the part, a sintering step can
be applied to bond the individual powders
31. Figure 34.6 Three dimensional printing: (1) powder layer is
deposited, (2) ink-jet printing of areas that will become the part,
and (3) piston is lowered for next layer (key: v = motion).
Three Dimensional Printing
32. RP Applications
Applications of rapid prototyping can be classified
into three categories:
1. Design
2. Engineering analysis and planning
3. Tooling and manufacturing
33. Design Applications
Designers are able to confirm their design by
building a real physical model in minimum time using
RP
Design benefits of RP:
Reduced lead times to produce prototypes
Improved ability to visualize part geometry
Early detection of design errors
Increased capability to compute mass properties
34. Engineering Analysis and Planning
Existence of part allows certain engineering analysis
and planning activities to be accomplished that
would be more difficult without the physical entity
Comparison of different shapes and styles to
determine aesthetic appeal
Wind tunnel testing of streamline shapes
Stress analysis of physical model
Fabrication of pre-production parts for process
planning and tool design
35. Tooling Applications
Called rapid tool making (RTM) when RP is used to
fabricate production tooling
Two approaches for tool-making:
1. Indirect RTM method
2. Direct RTM method
36. Indirect RTM Method
Pattern is created by RP and the pattern is used to
fabricate the tool
Examples:
Patterns for sand casting and investment
casting
Electrodes for EDM
37. Direct RTM Method
RP is used to make the tool itself
Example:
3DP to create a die of metal powders followed
by sintering and infiltration to complete the die
38. Manufacturing Applications
Small batches of plastic parts that could not be
economically molded by injection molding because
of the high mold cost
Parts with intricate internal geometries that could not
be made using conventional technologies without
assembly
One-of-a-kind parts such as bone replacements that
must be made to correct size for each user
39. Problems with Rapid Prototyping
Part accuracy:
Staircase appearance for a sloping part surface
due to layering
Shrinkage and distortion of RP parts
Limited variety of materials in RP
Mechanical performance of the fabricated parts is
limited by the materials that must be used in the
RP process