This document provides information about a webinar on isotropic finishing for surface integrity and part performance. The webinar will be presented by Dave Davidson and Jack Clark and will discuss what isotropic surfaces are, how centrifugal isotropic finishing works, and applications of isotropic finishing for bearings, automotive and dental parts, carbide tooling, medical devices, and more. Isotropic finishing can produce non-directional, random surfaces that improve load bearing and reduce failure compared to conventional machined surfaces.
Centrifugal Iso-finishing for Additive Manufactured PartsDDaveDavidson
Centrifugal Iso-Finishing is a high-energy, high-quality, high-speed hands-free mechanical method for deburring, finishing and polishing of 3D printed (additive manufactured) parts as well as coventional subtractive manufactured parts. High Centrifugal force is utilized to accelerated process cycle times and make use of smaller dimensioned media to access intricate and complex part shapes. Useful for hand-deburring minimization and for developing low-micro-inch polished surfaces. Centrifugal Iso-Burnishing can be used for developing compressive stress in part surfaces on the order of that achieved by shot peening making parts much more resistant to fatigue failure or fracture. Plateaud or planarized surfaces improve bearing load capacity of cooperating parts with more wear resistance and improved tribological properties. FREE sample part finishing available, Contact Dave Davidson at ddavidson@deburring-techgroup.com. SEE ALSO https://dryfinish.wixsite.com/iso-finish
Centrifugal Iso-finishing for Additive Manufactured PartsDDaveDavidson
Centrifugal Iso-Finishing is a high-energy, high-quality, high-speed hands-free mechanical method for deburring, finishing and polishing of 3D printed (additive manufactured) parts as well as coventional subtractive manufactured parts. High Centrifugal force is utilized to accelerated process cycle times and make use of smaller dimensioned media to access intricate and complex part shapes. Useful for hand-deburring minimization and for developing low-micro-inch polished surfaces. Centrifugal Iso-Burnishing can be used for developing compressive stress in part surfaces on the order of that achieved by shot peening making parts much more resistant to fatigue failure or fracture. Plateaud or planarized surfaces improve bearing load capacity of cooperating parts with more wear resistance and improved tribological properties. FREE sample part finishing available, Contact Dave Davidson at ddavidson@deburring-techgroup.com. SEE ALSO https://dryfinish.wixsite.com/iso-finish
Mass media finishing techniques improve part performance and service life, and these processes can be tailored or modified to amplify this effect. Although the ability of these processes to drive down deburring and surface finishing costs when compared to manual procedures is well known and documented, their ability to dramatically effect part performance and service life are not. This facet of edge and surface finishing deserves closer scrutiny and this is also true of larger and more complex parts – only more so
Technical article on Centrifugal Iso-Finishing for deburring and polishing.
Contact:
Dave Davidson
Deburring/Finishing Technologist
SME Tech Community Advisor
dryfinish@gmail.com | 509.230.6821
http://dryfinish.wordpress.com
http://about.me/dave.davidson
http://partsfinished.wordpress.com
Finished part portfolio: https://www.flickr.com/photos/72325472@N04/albums/72157686262863672
________________________
Free Sample Processing
Contract Deburring and Finishing Services
High Energy Finishing Equipment and Process Development
For additional information CONTACT Dave Davidson | dryfinish@gmail.com | https://en.gravatar.com/dryfinish
Wherever metals come into contact with each other contact stresses and friction occur. Both these conditions regulate and reduce the performance and compromise the design.
of the component. Super-finishing or CASF (Chemically Accelerated Surface Finishing) is a means of regaining those losses by producing a superfine finish where it is most needed.
Turbo abrasive machining tech paper - 2016Dave Davidson
INTRODUCTION: Turbo-Finish technology (also referred to as Turbo-Abrasive Machining) is a dry, high-speed spindle finishing process that utilizes abrasive fluidized bed technology, and high speed part rotation to develop extremely rapid and uniform edge and surface conditioning on aerospace, automotive and industrial parts. Polishing, deburring and edge radiusing are accomplished anywhere that the media can access. This finishing technology can develop isotropic surface finishes s while developing consistent round edges on any exposed sharp edged features.
Turbo-Finish and premature fatigue failure prevention and life extension. Turbo-Finish’s unique ability to produce isotropic surfaces on rotating parts can make them much less susceptible to problems associated with crack propagation. Additionally, the elimination of stress risers, and the generation of round edges are used to help extend component life. Rotating parts can especially benefit from the Turbo-Finish process. Disks and other rotating parts can all benefit from this surface and edge conditioning. Highly finished surfaces also tend to pick up less residual contaminants from operations. and smooth isotropic surfaces generate less turbulent air flow across their surfaces. Additionally, the Turbo-Finish process imparts beneficial compressive residual stress. As critical features of the part are processed simultaneously, it can produce a stress equilibrium throughout the entire part. One of the signature advantages of the process is that it is capable of producing peening like metal surface improvement effects, while simultaneously developing isotropic surfaces and deburring and edge-contouring sharp edged features
A Case study for near net Shape – Flashless forging for full yoke (Sleeve Yo...IJMER
Forging is a metal forming process commonly used in industry. Forging process is strongly
affected by the process parameters. In a progressive press forging process, an initial block of metal
(billet) is compressed between two dies halves in each stage to produce a complex part. The shape of
the initial billet is crucial in achieving the desired characteristics in the final forged part. The
metallurgical property as well as the geometry of the final product are strongly dependent on the shape
of initial work piece as well as on the perform shapes at each of the subsequent forming stages. The
major issue, which restricts imparting large deformation to the billet are the tensile stress, which later
results in cracking. Bulge is also undesirable from near net shape manufacturing point of view, as it
will require secondary processing like trimming Traditionally, an experienced designer uses his or her
expertise and design data handbooks for optimizing the initial billet shape. Design of the optimum
preform for near net shape forging is a crucial step in the design of many forging products In this study,
the same is arrived at using profile map, which is generated using the results of FE simulations of
varying geometrical and processing parameters.It is shown that preform map offers a powerful tool for
near net shape forging
Mass media finishing techniques improve part performance and service life, and these processes can be tailored or modified to amplify this effect. Although the ability of these processes to drive down deburring and surface finishing costs when compared to manual procedures is well known and documented, their ability to dramatically effect part performance and service life are not. This facet of edge and surface finishing deserves closer scrutiny and this is also true of larger and more complex parts – only more so
Technical article on Centrifugal Iso-Finishing for deburring and polishing.
Contact:
Dave Davidson
Deburring/Finishing Technologist
SME Tech Community Advisor
dryfinish@gmail.com | 509.230.6821
http://dryfinish.wordpress.com
http://about.me/dave.davidson
http://partsfinished.wordpress.com
Finished part portfolio: https://www.flickr.com/photos/72325472@N04/albums/72157686262863672
________________________
Free Sample Processing
Contract Deburring and Finishing Services
High Energy Finishing Equipment and Process Development
For additional information CONTACT Dave Davidson | dryfinish@gmail.com | https://en.gravatar.com/dryfinish
Wherever metals come into contact with each other contact stresses and friction occur. Both these conditions regulate and reduce the performance and compromise the design.
of the component. Super-finishing or CASF (Chemically Accelerated Surface Finishing) is a means of regaining those losses by producing a superfine finish where it is most needed.
Turbo abrasive machining tech paper - 2016Dave Davidson
INTRODUCTION: Turbo-Finish technology (also referred to as Turbo-Abrasive Machining) is a dry, high-speed spindle finishing process that utilizes abrasive fluidized bed technology, and high speed part rotation to develop extremely rapid and uniform edge and surface conditioning on aerospace, automotive and industrial parts. Polishing, deburring and edge radiusing are accomplished anywhere that the media can access. This finishing technology can develop isotropic surface finishes s while developing consistent round edges on any exposed sharp edged features.
Turbo-Finish and premature fatigue failure prevention and life extension. Turbo-Finish’s unique ability to produce isotropic surfaces on rotating parts can make them much less susceptible to problems associated with crack propagation. Additionally, the elimination of stress risers, and the generation of round edges are used to help extend component life. Rotating parts can especially benefit from the Turbo-Finish process. Disks and other rotating parts can all benefit from this surface and edge conditioning. Highly finished surfaces also tend to pick up less residual contaminants from operations. and smooth isotropic surfaces generate less turbulent air flow across their surfaces. Additionally, the Turbo-Finish process imparts beneficial compressive residual stress. As critical features of the part are processed simultaneously, it can produce a stress equilibrium throughout the entire part. One of the signature advantages of the process is that it is capable of producing peening like metal surface improvement effects, while simultaneously developing isotropic surfaces and deburring and edge-contouring sharp edged features
A Case study for near net Shape – Flashless forging for full yoke (Sleeve Yo...IJMER
Forging is a metal forming process commonly used in industry. Forging process is strongly
affected by the process parameters. In a progressive press forging process, an initial block of metal
(billet) is compressed between two dies halves in each stage to produce a complex part. The shape of
the initial billet is crucial in achieving the desired characteristics in the final forged part. The
metallurgical property as well as the geometry of the final product are strongly dependent on the shape
of initial work piece as well as on the perform shapes at each of the subsequent forming stages. The
major issue, which restricts imparting large deformation to the billet are the tensile stress, which later
results in cracking. Bulge is also undesirable from near net shape manufacturing point of view, as it
will require secondary processing like trimming Traditionally, an experienced designer uses his or her
expertise and design data handbooks for optimizing the initial billet shape. Design of the optimum
preform for near net shape forging is a crucial step in the design of many forging products In this study,
the same is arrived at using profile map, which is generated using the results of FE simulations of
varying geometrical and processing parameters.It is shown that preform map offers a powerful tool for
near net shape forging
Step by step guide which will help to understand the PCB fabrication process. PCB manufacturing and assembly must be conducted in a clean environment that is free of contaminants. This is important to produce good quality boards that offer unfailing service for years.
Experimental Study on Surface Roughness by Using Abrasive ParticlesIJERA Editor
New advancement of technology and never satisfying demands of the civilization are putting huge pressure on the natural fuel resources and these resources are at a constant threat to its sustainability. Surface finish has a vital influence on functional properties such as wear resistance and power loss due to friction on most of the engineering components. Voltage, mesh number, revolutions per minute (rpm) of electromagnet, and percentage weight of abrasives has been identified as important process parameters affecting surface roughness. The experiments were planned using response surface methodology and percentage change in surface roughness (ΔRa) was considered as response. Analysis of experimental data showed that percentage change in surface roughness (ΔRa) was highly influenced by mesh number followed by percentage weight of abrasives, rpm of electromagnet, and voltage. The process has been investigated extensively in the finishing of cylindrical surfaces. The surface finish was found to improve significantly with an increase in the grain size, relative size of abrasive particles vis-à-vis the iron particles, feed rate and current. Super finishing is a micro-finishing process that produces a controlled and smooth surface condition on work pieces. It is not primarily a sizing operation, its major purpose is to produce a surface on a work piece capable of sustaining uneven distribution of a load by improving the geometrical accuracy. The wear life of the parts micro finished to maximum smoothness is extended considerably. According to the design of experimentation, mathematical model for Lapping operation on advance ceramic material is proposed. In order to get minimum values of the surface roughness, optimization of the mathematical model is done and optimal operation of the examined factors is going to be determined. The obtained res
Prototyping methodology for automotive product development GokulMurugesan7
This present takes trough some of the prototyping methodologies in the automotive industry and a few case studies regarding the different automotive components.
Machining of Aircraft Bearing Rings using High Quality Bearing SteelIJERA Editor
Bearing rings for Aircraft application are machined using high quality M50 High Speed Steel conforming to
AMS 6491B. The raw material for the rings of Ball bearing is prepared from a single bar stock using trepanning.
Special collet type soft jaw and Mandrels were devised and used on CNC Lathes to reduce manufacturing
problems like ovality. Raceway forms are turned using single point copy turning insert. The problems faced
during rings manufacture were discussed in this study.
report of industrial training done at MAKINO.
For over two decades, Makino Auto Industries Pvt. Ltd. has been the trusted name in the automotive industry. The company's product range of Automotive clutch assemblies, brake assemblies and components are amongst the category leaders in India and discerning markets of the world.
Established in 1990 Makino has 4 plants in India. Started as a Friction Disc manufacturer and now a complete clutch & Brake Solution Provider.
Experts of Automotive Clutches & Brakes (2W, 3W and 4W applications)
Working with major OEM in India for 2 W and 3 W applications
Vision is to provide technologically advanced clutches & brakes for existing and future vehicles.
"MAKINO is committed to consistently provide the Original Equipment Manufacturer and vehicle owner quality products.
Cirexx is a small business specializing in Time Critical Design, Fabrication and Assembly of Rigid-Flex, RF, Flex, and Hybrid printed circuit boards. We do quick turn, high-quality fabrication and assembly at one location and are MIL-Spec 31032 and ITAR certified.
Assembly of the components (Crank shaft, Connecting rod, Gudgeon pin and Piston) by
using different manufacturing processes from the material generated as a scrap during
manufacturing of different products through various processes.
dMT SPC® dry surface coatings for the ultimate wear protection on industrial ...dmtgms
Crane Maintenance in factories, port facilities and container terminals.
dMT Ecotech GmbH in Munich, Germany, offers innovative SPC metal protective coatings for process equipment in manufacturing and logistics industries.
SPC® products are self-applying, maintenance-free, dry, protective coatings which can reduce metal surface wear up to 80%. They especially outperform conventional greases and oils in dusty environments. Applications areas include cranes, rail-mounted conveying and warehousing systems, rotating dryers & furnaces, railway vehicles. We call it: “managed coefficient of friction”.
These are not "me-too products". They are innovative, solve numerous maintenance problems for which there no better solutions, easy to install, require no worker training, operate long-term without failures and monitoring, are environmentally and worker-safe, and above all, yield substantial cost-savings in appropriate applications.
These products are certainly of interest to machinery maintenance departments in many of the following manufacturing industries: iron and steel, foundries, smelting, wood and paper products, automotive and machinery, cement, gypsum, mining & minerals, power/waste incineration plants, port facilities, logistics operations. Everywhere where heavy industrial equipment needs lubrication to reduce surface wear and maintenance costs.
Similar to Sme membership webinar_08.19.15_final-1 (20)
Centrifugal Iso-Finishing is a high-speed, high-quality and hands-free method for deburring, smoothing, surface-0finishing, burnishing and polishing of work-pieces and parts. Contact Dave Davidson for additional technical information and assistance with getting your parts sample finished. Contact me at ddavidson@deburring-tech-group.com See also dryfinish.wordpress.com
Technical article reprint on the high-speed and high-intensity and high-quality Centrifugal iso-Finishing method.. The methods used widely on aerospace, motorsports, automotive, medical, dental, orthodontic and jewelry manufactured parts. For additional information contact Dave Davidson at ddavidson@deburring-tech-group.com. Ask about the free sample part finishing program.
See also the technical blog at https://dryfinish.wordpress.com
Modern machine-shop-apr-18 centrifugal isofinishing crnakshaftsDave Davidson
See the technical article on Centrifugal Iso-Finishing on surface finish and it's effect on engine components in the Motorsports Industry terms of performance improvement.
Contact D. A. (Dave) Davidson at ddavidson@deburring-tech-group.com for additional information or help with free sample finishing.
Centrifugal Iso-Finishing Technical article as seen in Products Finishing mag...Dave Davidson
This high-speed, high-intensity mass finishing
method can improve part performance. Centrifugal iso-finishing can be used not only for deburring and edge-contour, but also to
develop surface finish attributes that improve the performance,
surface integrity and service life of components.
A High-Speed, High-Energy Alternative
Centrifugal iso-finishing is a high-speed and high-intensity
mass finishing method in which abrasive or polishing materials are caused to interact with part edges and surfaces
with 10 times the surface pressure of low-energy finishing
methods. What this means, in practical terms, is that it is
possible to produce very refined surface finishes in abbreviated process cycle times. It also means that parts with
complex and detailed geometries can be deburred with a
minimum of manual intervention.
Iso-Finishing sample part finishing application formDave Davidson
Free sample part processing and quotations for deburring, finishing or polishing of your production parts.
(1) Download the Word document form into your computer.
(2) Complete the form and include a paper copy with your sample parts to being shipped to the Isofinishing address shown on the form
MFI full finishing product catalog with technical assistance infoDave Davidson
Mass Finishing Equipment and Supply Catalog includes equipment, finishing media, supplies and accessories. Features Centrifugal Iso-Finishing equipment for high-speed and hands-free deburring, finishing and polishing. For technical assistance and help with arranging for free sample finishing of your parts contact Dave Dagvidson at ddavidson@deburring-tech-group.com
It's the Finish that Counts. Technical Magazine article reprint.Dave Davidson
A conventionally produced surface (turned, milled,
ground, EDM) is typically Gaussian in nature, that is,
the peak and valley distribution is pretty much equal
in height. This type of surface can be very unstable and
unpredictable when wear and load bearing are considered. The images in Figure 1 demonstrate this type of
surface.
There are many ways to produce plateaued surfaces.
They are varied in approach but all have the ability to
control the surface peak characteristics separately for
the valley characteristics. Methods that are used to improve surfaces for performance and increased service life include centrifugal barrel finishing, turbo-abrasive machining (aka Turbo-Finish) and isotropic micro-finishing with vibratory finishing equipment. For additional technical information and/or elp with free sample part processing contact Dave Davidson at ddavidson@deburring-tech-group.om
Modern machine shop interviews Dave Davidson about Gear finishing processes. For additional technical information and assistance with sample part finishing contact Dave Davidson | ddavidson@deburring-tech-group.com # #machining #polishing #finish #cnc #manufacturingengineering #automotiveindustry #finishing #deburring #leanmanufacturing #aerospace #massfinishing #grinding #automotive #leanmaufacturing #gears
BV PRODUCTS - Bowl and Tub Vibratory Finishing SystemsDave Davidson
Vibratory finishing machines designed, engineered and built-in Australia that out-perform and out-last vibratory finishing machines costing much more.
Robust design with direct-drive motor and integrated parts/media separation for economical vibratory finishing of metal parts. BV Products has been perfecting its unique all cast polyurethane vibratory finishing machines with direct-drive motion generators for almost 40 years to make them the most innovative and most cost-effective surface finishing solution in the industry. Contact Dave Davidson: ddavidson@deburring-tech-group.com
BV PRODUCTS VIBRATORY FINISHING SYSTEMS FOR DEBURRING AND FINISHINGDave Davidson
Vibratory finishing machines designed, engineered and built-in Australia that out-perform and out-last vibratory finishing machines costing much more.
Robust design with direct-drive motor and integrated parts/media separation for economical vibratory finishing of metal parts. BV Products has been perfecting its unique all cast polyurethane vibratory finishing machines with direct-drive motion generators for almost 40 years to make them the most innovative and most cost-effective surface finishing solution in the industry. Contact Dave Davidson: ddavidson@deburring-tech-group.com
BV Products - Vibratory Finishing machinery for deburring and polishingDave Davidson
Vibratory finishing machines designed, engineered and built-in Australia that out-perform and out-last vibratory finishing machines costing much more.
Robust design with direct-drive motor and integrated parts/media separation for economical vibratory finishing of metal parts. BV Products has been perfecting its unique all cast polyurethane vibratory finishing machines with direct-drive motion generators for almost 40 years to make them the most innovative and most cost-effective surface finishing solution in the industry. Contact Dave Davidson: ddavidson@deburring-tech-group.com
Vibratory finishing machines designed, engineered and built in Australia that out-perform and out-last vibratory finishing machines costing much more. Robust design with direct-drive motor and integrated parts/media separation for economical vibratory finishing of metal parts. BV Products has been perfecting its unique all cast polyurethane vibratory finishing machines with direct-drive motion generators for almost 40 years to make them the most innovative and most cost-effective surface finishing solution in the industry. Contact Dave Davidson: ddavidson@deburring-tech-group.com
Centrifugal Iso-Finishing for Additive Manufactured PartsDave Davidson
Centrifugal Iso-Finishing Technology is used on 3D Printed and conventional CNC precision machined components for deburring, finishing and polishing. It is a high-speed, high-quality hands-free finishing method that produces highly refined surface finishes in a fraction of the time required by other equipment (10 times faster, in many cases) Free sample finishing of your parts is available, contact Dave Davidson at ddavidson@deburring-tech-group.com
Centrifugal iso finishing sample processingDave Davidson
High-Speed, Hands-free deburring, iso-finishing and polishing of manufactured and 3D printed parts. Contact Dave Davidson for free sample finishing, technical assistance and contract deburring and iso-finish polishing at dryfinish@gmail.com | https://dryfinish.wixsite.com/iso-finish https://lnkd.in/gFjetZk
Centrifugal iso finishing contract services Dave Davidson
High-Speed, Hands-free deburring, iso-finishing and polishing of manufactured and 3D printed parts. Contact Dave Davidson for free sample finishing, technical assistance and contract deburring and iso-finish polishing at dryfinish@gmail.com | https://dryfinish.wixsite.com/iso-finish https://lnkd.in/gFjetZk
High-Speed, Hands-free deburring, iso-finishing and polishing of manufactured and 3D printed parts. Contact Dave Davidson for free sample finishing, technical assistance and contract deburring and iso-finish polishing at dryfinish@gmail.com | https://dryfinish.wixsite.com/iso-finish https://lnkd.in/gFjetZk
Centrifugal iso finishing - part dividersDave Davidson
High-Speed, Hands-free deburring, iso-finishing and polishing of manufactured and 3D printed parts. Contact Dave Davidson for free sample finishing, technical assistance and contract deburring and iso-finish polishing at dryfinish@gmail.com | https://dryfinish.wixsite.com/iso-finish https://lnkd.in/gFjetZk
Final vibratory iso-finishing processesDave Davidson
High-Speed iso-finishing and polishing of manufactured and 3D printed parts. Contact Dave Davidson for free sample finishing, technical assistance and contract deburring and iso-finish polishing at dryfinish@gmail.com | https://dryfinish.wixsite.com/iso-finish https://lnkd.in/gFjetZk
High-Speed, Hands-free deburring, iso-finishing and polishing of manufactured and 3D printed parts. Contact Dave Davidson for free sample finishing, technical assistance and contract deburring and iso-finish polishing at dryfinish@gmail.com | https://dryfinish.wixsite.com/iso-finish https://lnkd.in/gFjetZk
Centrifugal iso finishing - Equipment descriptionDave Davidson
High-Speed, Hands-free deburring, iso-finishing and polishing of manufactured and 3D printed parts. Contact Dave Davidson for free sample finishing, technical assistance and contract deburring and iso-finish polishing at dryfinish@gmail.com | https://dryfinish.wixsite.com/iso-finish
https://lnkd.in/gFjetZk
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
1. Isotropic Finishing for Surface
Integrity and Part Performance
The webinar will start at 2:00pm (EST)
Brought to you by SME Membership
August 19, 2015
2. SME Membership Pg.2
• 1 hour webinar: 45 min + 15 min Q&A.
• Attendee phones will be muted during the webinar.
• During the presentation, you can log your questions in the Q&A window
of the WebEx screen.
• The presentation will be recorded. A web link to the recording will be
emailed to attendees within 24 hrs by SME.
• If you have any difficulties, please email nlowell@sme.org
Webinar Housekeeping Rules
3. Today’s Webinar
Isotropic Finishing for Surface Integrity
and Part Performance
SME Speaker:
Dave Davidson
SME Advisor: Machining/Material Removal
Technical Community
SME Speaker:
Jack R. Clark, President
Surface Analytics, LLC, Fort Collins, CO
Faculty Affiliate: Colorado State University
6. SME Membership Pg.6
Isotropic Finishing: Definition
• In contrast to machined or ground surfaces Isotropic surfaces are
non-directional or random in character.
• They do not exhibit the surface pattern of parallel lines, grooves
or notches common to all machining methods
• This is a desirable surface characteristic functionally as the overall
amount of surface available for bearing loads can be increased
dramatically and machining notches which provide potential
failure related crack propagation points are attenuated
substantially.
7. SME Membership Pg.7
Centrifugal Isotropic Finishing (CIF)
– How it works…
• Rotating Turret
• Counter-rotating barrels
• High Internal G-Forces
• Rapid media turnover and
slide zone
8. SME Membership Pg.8
CBF Advantages:
• Very high speed processing
• Quick change over capability
• Different parts can be
processed simultaneously in
different chambers
• Compartmentalization or
fixturing possible
• Very refined surfaces possible especially
in sequential processing
9. SME Membership Pg.9
CBF Isotropic Finishing - Bearings
• Bearings require
substantial processing to
produce low-micro-inch
surfaces needed for
optimal load bearing
capability.
10. SME Membership Pg.10
Hands-Free Surface Finishing
of 3-D metal printed parts
• 3-D metal printed parts of
various alloys were received in
their printed condition.
• Profilomic and areal data
collected from a sampling of
the part specimens
• Indicated an initial surface
roughness of 350+ micro-
inches.
• CIF process reduced surface
profiles on these tested
samples f to a range of 12 – 15
micro inches Ra.
11. SME Membership Pg.11
Centrifugal Isotropic Finishing of
Laser cut stainless steel
Stainless Steel,
laser cut using
nitrogen as the
shielding gas.
12. SME Membership Pg.12
Extreme Finishing
• Flame-cut foundry steel
castings, with as-cast and
flame-cut surfaces.
• Demonstration experiment
to validate surface profile
reduction on extremely
rough surfaces.
13. SME Membership Pg.13
Heat-treat scale removal, edge-contour,
burnishing automotive parts
• These heat-treated
automotive stampings
require cleaning and edge
contour on exterior and
interior edges.
• CIF high-intensity finishing
processes with smaller
media used as the process
was able to achieve
specifications for radiusing
the inside edges of the
part that conventional
processing could not.
14. SME Membership Pg.14
Small Part Finishing: Metal
Injection Molding
• Metal Injection molded parts
typically exhibit a rough surface
condition that can pose a severe
challenge when the part is
destined for the mass consumer
market and has a requirement
for very smooth or polished
surfaces to meet cosmetic or
aesthetic criteria.
• On small parts such as these cell-phone hinges conventional buffing
and polishing techniques are inadequate given their potential for
creating bottlenecks and production constraints to production of
large numbers of parts.
15. SME Membership Pg.15
CBF Isotropic Finishing
Dental Applications
• Dental laboratories have long
faced severe bottlenecks and
production constraints in the
finishing of dental parts such
as cast chrome partials, full
dentures and full cast crowns.
This finishing bottleneck often
limits a dental technician’s
production rate to three to four
pieces every 1.5 hours when
manual finishing is employed.
16. SME Membership Pg.16
CBF Isotropic Finishing – Carbide Tooling
• Two process tracks have been
developed for improving tooling
with edge and surface
preparation. One process that
has been developed utilizes
non-abrasive materials to
burnish edges and surfaces.
• The other track uses dry
process media material in
conjunction with polishing
abrasives to develop more
refined and consistent tooling
edges that are more
predictable. This type of
processing adds service life and
improves cutting performance
17. SME Membership Pg.17
Medical Device Finishing
• In the medical industry, the
fine isotropic finish produced
by CBF machines is a
requirement.
• Processing metal implants in
centrifugal finishing machines
helps reduce complications
within surgeries and
procedures.
• Centrifugal machines are also
used by companies that
produce other medical
devices.
18. SME Membership Pg.18
Isotropic Surface Generation on Roller Bearings –
Before and After, SEM and 3D views compared.
(As ground vs. CBF Finish)
Photos by Jack Clark, Surface Analytics, jclark@surfaceanalytics.com | SME MMR Tech Community
19. SME Membership Pg.19
Meeting the Lean Deburring Challenge at MacKay
Mfg. Co. Spokane, WA
Typical Hand deburring
operation prior to
implementation of high speed
centrifugal isotropic finishing
and cellular flow for deburring
and finishing operations.
This batch method can lead to
uniformity problems and have
uneven stress distribution on
parts that can lead to
premature part failure in many
cases.
20. SME Membership Pg.20
High speed isotropic finishing
in cellular flow environment replaces most hand finishing…
33. SME Membership Pg.33
CBF Finished
Best Ra
Best Rz/Ra ratio = 6.1:1
Better SRvk/SRpk ratio = 2.1:1
34. SME Membership Pg.34
Draw and Iron (D&I) Aluminum
Can Punch and Die
• The punch drives a sheet of aluminum through a progressively
smaller and smaller pack of dies to thin the material and form the
can.
• If the surface finish of the punch does not retain lubricant and vent
air, the newly formed can cannot be “stripped” off the punch
damaging the can.
• If the finish on the dies is not such that they produce a “bright
looking” can, it will not be marketable.
35. SME Membership Pg.35
Can Punch
Conventional Grind
Good Ra
Excellent SRvk/SRpk ratio = 4.1:1
Unpredictable can release
36. SME Membership Pg.36
Can Punch
Conventional Grind
• The texture of the grind
limits the lubricant flow
and restricts air flow to
support release.
• The Texture Aspect
Ratio (Str) reveals a
small included angle
that is not good for
lubrication distribution.
Even though the roughness and
Bearing Ratio are “good”...
37. SME Membership Pg.37
Can Punch
CBF Finished
Good Ra
SRvk/SRpk ratio = 1.4:1
Predictable can release
38. SME Membership Pg.38
Can Punch
CBF Finished
• CBF allows for excellent
lubrication
flow/retention with
excellent air infiltration
for good release.
• The Texture Aspect
Ratio (Str) reveals a
random finish that has
proven to be excellent
for release in many
similar applications.
Roughness was optimized by
varying abrasive grit/binder, and
CBF compressive loads.
40. SME Membership Pg.40
Concave Spinal Implants
• Form variance must be controlled.
• Overall shape can cause unpredictable in wear.
41. SME Membership Pg.41
Convex Spinal Implants
• Each step of the forming of the part must be monitored.
• Turing and super finishing artifacts remain after final
polishing.
42. SME Membership Pg.42
Wear Analysis
• Wear on Convex Implant.
• Original spherical form will be
removed for wear analysis.
43. Convex
Concave
New Part “Couples”
•As manufactured mating parts
must be uniform over the entire
contact area.
•Machining process have
produced forms where the two
surfaces only touch in the areas
indicated by the arrows.
44. Worn Part “Couples”
Concave
Convex
•The resultant wear on each part
indicates that the original form
did produce high loads and,
therefore, premature wear.
•The high wear area is indicated
by the arrows progressing to less
wear in the centers.
45. SME Membership Pg.45
Implant Surface Finish Varies
• All surfaces are 4 - 7 nm SRa and 42 – 68 nm SRz
• None are Isotropic Finished
46. SME Membership Pg.46
Isotropic Finishing Summary
• Deburring and surface conditioning of complex machined
parts is one of the most troublesome problems faced by the
metalworking industry.
• High-energy surface finishing can drastically reduce finishing
and deburring costs.
• Isotropic Finishing:
– Extends tooling and part life.
– Improves wear resistance.
– Reduces fatigue failure.
– Ensures part-to-part uniformity.
48. SME Membership Pg.48
Thank You for Attending
Dave Davidson
dryfinish@gmail.com
Jack R. Clark
jclark@surfaceanalytics.com
SME Membership | http://i.sme.org/home
One SME Drive | Dearborn, MI 48121 USA | www.sme.org
Next SME Membership Webinar
3D Printed Carbon Fiber
9/15/15 3:00pm - 4:00 pm (EST)
Register at SME Member X-Press
https://www.xpressreg.net/register/sme/start.asp
49. SME Membership Pg.49
References
• "The Effect of Surface Finish on Functional Surface Performance". Dr. M.B. Grant, Director of
Corporate Metrology, Cummins Engine Company. (SME Paper, presented at the International
Grinding Conference, 1990)
• Metal Finishing Magazine, 3 May 2006. Co-authored with Michael Massarsky, PhD, and David
A. Davidson, “It's the Finish that Counts”.
• “Expanding the Limits of Interferometric Measurement for Automotive Applications”. Jack R.
Clark author ( XI. International Colloquium on Surfaces, Chemnitx, Germany, 2004).
• SME Medical Manufacturing 2008 Annual, pp. 91-93, “Metrology Keeps Hip”.
• Products Finishing Magazine, posted 1 January 2015. Co-authored with David A. Davidson,
“Isotropic Mass Finishing for Surface Integrity and Part Performance”.
• "It's the Finish that Counts"
• http://www.slideshare.net/dryfinish/its-the-finish-that-counts
• "The Role of Surface Finish In Improving Part Performance":
• http://www.slideshare.net/dryfinish/november-2012-f4-deburring-1-final?related=1
• "Free Abrasives Flow for Automated Finishing":
• http://www.slideshare.net/dryfinish/october-2013-f2-deburring-1?related=2