ppt on details of smart materials that could be useful in civil engineering. smart materials are the newest technology that is the most researched topic in civil engineering fields
Smart Materials ppt, Smart or intelligent materials are materials that have to respond to stimuli and environmental changes, Detailed Engineering Project Research on Smart Materials, smart and composite materials, smart materials in construction, smart materials in engineering, its about smart or say intelligent materials
This presentation is an introduction to Smart Materials including Piezoelectric materials, Shape memory materials, Magnetorheological, PH sensitive polymers, and Chromogenic systems.You can find the other sessions on my Linkedin or Slideshare pages as well.
classify and explain various types of smart materials.
Smart materials” are materials that change significantly one or more of their properties, such as shape, color, or size in response to externally applied stimuli, such as stress, light, temperature, moisture or pH, and electric or magnetic fields.
Introduction to smart materials and their applications in engineering.
How to prepare MR (Magnetrorheological) fluids at home?
What are Shape Memory Alloys?
What are Piezoelectric materials?
#WikiCourses
https://wikicourses.wikispaces.com/Topic04+Smart+Materials
Smart materials are designed materials that have one or more properties that can be significantly changed in a controlled fashion by external stimuli, such as stress, temperature, moisture, pH, electric or magnetic fields.
SMART MATERIALS AND MEMS_17ME745_Full note.docxRoopaDNDandally
JSS ACADEMY OF TECHNICAL EDUCATION
JSS campus, Dr. Vishnuvaradhan road, Bangalore -60
DEPARTMENT OF MECHANICAL ENGINEERING
Sub: Smart Materials and MEMS
Question bank - Module – I
Text Book: “Smart structures – Analysis and Design” by A V Srinivasan. Cambridge University Press 2001.
1. What are smart materials? Explain its application in various fields.
2. Explain the active and passive smart materials and also open loop and closed loop smart structure.
3. List the applications of smart structures and explain.
4. What are piezoelectric materials? Explain their properties
5. Explain the use of piezoelectric material in a Inchworm Linear motor.
6. Derive an equation for actuation of structural components by piezoelectric crystal under axial motion of rods considering various loading.
7. What are shape memory alloys? Applications of shape memory alloys.
8. Explain with neat sketches, one way and two wayshape memory effect.
9. Develop a mathematical model to find martensitic fraction in an SMA at critical temperatures by considering only the effect of temperature. (Explain experimental phenomenology of SMA)
10. Explain the effect of stress on the characteristic temperature by deriving an expression for upper and lower limits of stress for phase transformation. (super elasticity)
11. With a neat sketch explain stress-strain characteristics of SMA as a function of temperature.
12. Discuss the advantages of multiplexing embedded NiTiNOL actuators.
13. Explain with neat sketch vibration control using a NiTiNOL wire supporting a weight at the end of a cantilever beam.
14. Explain with neat sketch vibration control of a beam by SMA generated axial force.
15. Explain with neat sketch feasibility of controlling vibration in a beam structure.
JSS ACADEMY OF TECHNICAL EDUCATION
JSS campus, Dr. Vishnuvaradhan road, Bangalore -60
DEPARTMENT OF MECHANICAL ENGINEERING
Sub: Smart Materials and MEMS
Question bank - Module – 2
Ref: Smart structures - Analysis and design by A V Srinivasan
1. Discuss fluid composition and behavior of ER and MR fluids
2. What are MR Dampers? Explain the characteristics of controllable fluid dampers as applied to civil structures.
3. Explain the application of MR fluids in the clutches used to transfer torque between rotating mechanical components
4. Explain the Bingham plastic material model of ER and MR fluids.
5. Discuss application of ER and MR fluids in clutches and dampers
6. Differentiate between the properties of ER and MR fluids.
7. Explain the principle of working of MR fluids with a sketch
8. What are ER fluids? Discuss their merits and demerits. With a sketch explain working of MR damper.
9. Explain the concept of “Total Internal Refection”. How it is useful in fiber optics? Derive Numerical Aperture of optical fiber.
10. Explain how embedded fiber optic sensors can be used as chemical sensors in structures.
11. Explain the fiber optic principle. Discuss on technique of measuring strain using
ppt on details of smart materials that could be useful in civil engineering. smart materials are the newest technology that is the most researched topic in civil engineering fields
Smart Materials ppt, Smart or intelligent materials are materials that have to respond to stimuli and environmental changes, Detailed Engineering Project Research on Smart Materials, smart and composite materials, smart materials in construction, smart materials in engineering, its about smart or say intelligent materials
This presentation is an introduction to Smart Materials including Piezoelectric materials, Shape memory materials, Magnetorheological, PH sensitive polymers, and Chromogenic systems.You can find the other sessions on my Linkedin or Slideshare pages as well.
classify and explain various types of smart materials.
Smart materials” are materials that change significantly one or more of their properties, such as shape, color, or size in response to externally applied stimuli, such as stress, light, temperature, moisture or pH, and electric or magnetic fields.
Introduction to smart materials and their applications in engineering.
How to prepare MR (Magnetrorheological) fluids at home?
What are Shape Memory Alloys?
What are Piezoelectric materials?
#WikiCourses
https://wikicourses.wikispaces.com/Topic04+Smart+Materials
Smart materials are designed materials that have one or more properties that can be significantly changed in a controlled fashion by external stimuli, such as stress, temperature, moisture, pH, electric or magnetic fields.
SMART MATERIALS AND MEMS_17ME745_Full note.docxRoopaDNDandally
JSS ACADEMY OF TECHNICAL EDUCATION
JSS campus, Dr. Vishnuvaradhan road, Bangalore -60
DEPARTMENT OF MECHANICAL ENGINEERING
Sub: Smart Materials and MEMS
Question bank - Module – I
Text Book: “Smart structures – Analysis and Design” by A V Srinivasan. Cambridge University Press 2001.
1. What are smart materials? Explain its application in various fields.
2. Explain the active and passive smart materials and also open loop and closed loop smart structure.
3. List the applications of smart structures and explain.
4. What are piezoelectric materials? Explain their properties
5. Explain the use of piezoelectric material in a Inchworm Linear motor.
6. Derive an equation for actuation of structural components by piezoelectric crystal under axial motion of rods considering various loading.
7. What are shape memory alloys? Applications of shape memory alloys.
8. Explain with neat sketches, one way and two wayshape memory effect.
9. Develop a mathematical model to find martensitic fraction in an SMA at critical temperatures by considering only the effect of temperature. (Explain experimental phenomenology of SMA)
10. Explain the effect of stress on the characteristic temperature by deriving an expression for upper and lower limits of stress for phase transformation. (super elasticity)
11. With a neat sketch explain stress-strain characteristics of SMA as a function of temperature.
12. Discuss the advantages of multiplexing embedded NiTiNOL actuators.
13. Explain with neat sketch vibration control using a NiTiNOL wire supporting a weight at the end of a cantilever beam.
14. Explain with neat sketch vibration control of a beam by SMA generated axial force.
15. Explain with neat sketch feasibility of controlling vibration in a beam structure.
JSS ACADEMY OF TECHNICAL EDUCATION
JSS campus, Dr. Vishnuvaradhan road, Bangalore -60
DEPARTMENT OF MECHANICAL ENGINEERING
Sub: Smart Materials and MEMS
Question bank - Module – 2
Ref: Smart structures - Analysis and design by A V Srinivasan
1. Discuss fluid composition and behavior of ER and MR fluids
2. What are MR Dampers? Explain the characteristics of controllable fluid dampers as applied to civil structures.
3. Explain the application of MR fluids in the clutches used to transfer torque between rotating mechanical components
4. Explain the Bingham plastic material model of ER and MR fluids.
5. Discuss application of ER and MR fluids in clutches and dampers
6. Differentiate between the properties of ER and MR fluids.
7. Explain the principle of working of MR fluids with a sketch
8. What are ER fluids? Discuss their merits and demerits. With a sketch explain working of MR damper.
9. Explain the concept of “Total Internal Refection”. How it is useful in fiber optics? Derive Numerical Aperture of optical fiber.
10. Explain how embedded fiber optic sensors can be used as chemical sensors in structures.
11. Explain the fiber optic principle. Discuss on technique of measuring strain using
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Smart materials are materials that have one or more properties that can be significantly altered in a controlled fashion by external stimuli, such as stress, temperature, moisture, pH, electric or magnetic fields.
The change in the material can also be reversible, as a change in stimulus can bring the material back to its previous state.
Active vibration control of smart piezo cantilever beam using pid controllereSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Active vibration control of smart piezo cantilever beam using pid controllereSAT Journals
Abstract In this paper the modelling and Design of a Beam on which two Piezoelectric Ceramic Lead Zirconate Titanate ( PZT) patches are bonded on the top and bottom surface as Sensor/Actuator collocated pair is presented. The work considers the Active Vibration Control (AVC) using Proportional Integral Derivative (PID) Controller. The beam is assumed as Euler-Bernoulli beam. The two PZT patches are also treated as Euler-Bernoulli beam elements. The contribution of mass and stiffness of two PZT patches in the design of entire structure are also considered. The beam is modelled using three Finite Elements. The patches can be bonded near the fixed end, at middle or near the free end of the beam as collocated pair. The design uses first two dominant vibratory modes. The effect of PZT sensor/actuator pair is investigated at different locations of beam in vibration control. It can be concluded from the work that best result is obtained when the PZT patches are bonded near the fixed end. Keywords: Smart Beam, Active Vibration control, Piezoelectric, PID Controller, Finite Element
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
Smart material & structure
1.
2. Smart structure incorporates
sensors and actuators into the material of
the structure in such a way that enables
the structure to sense its environment and
then respond appropriately in a pre-
programmed manner.
3.
4.
5.
6. Data Acquisition (tactile sensing): the aim of
this component is to collect the required raw
data needed for an appropriate sensing and
monitoring of the structure.
LOAD 50
SENSOR
ACTUATOR
Electric Field 5mV
7. Data Transmission (sensory nerves): the
purpose of this part is to forward the raw data to
the local and/or central command and control
units.
8. Command and Control Unit (brain): the role
of this unit is to manage and control the whole
system by analyzing the data, reaching the
appropriate conclusion, and determining the
actions required.
LOAD 50
Electric Field 5mV
CONTROL UNIT
5mV
means
LOAD:50
Recover
LOAD:50
LOAD:50
APPLY 10mV
9. Data Instructions (motor nerves): the
function of this part is to transmit the
decisions and the associated instructions back
to the members of the structure.
10. Action Devices (muscles): the purpose of this
part is to take action by triggering the controlling
devices/ units.
CONTROL UNIT
LOAD 50
Electric Field 10mV
LOAD 50
CMPENSATING 50
11. Smart materials are materials that respond to
environmental stimuli, such as temperature,
moisture, pH, or electric and magnetic fields.
13. They produce an electricThey produce an electric
field when exposed to afield when exposed to a
change in dimensionchange in dimension
caused by an imposedcaused by an imposed
mechanical forcemechanical force
(piezoelectric or generator(piezoelectric or generator
effect). Conversely, aneffect). Conversely, an
applied electric field willapplied electric field will
produce a mechanicalproduce a mechanical
stressstress
14.
15.
16.
17. A material must be formed as a single crystal to be
truly piezoelectric
18. Ceramics have a multi-crystalline structure
made up of large numbers of randomly orientated
crystal grains. The random orientation of the grains
results in a net cancellation of the piezoelectric
effect. The ceramic must be polarized to align a
majority of the individual grains' effects.
19. Piezoelectric ceramic
materials are not
piezoelectric until the
random ferroelectric
domains are aligned. This
alignment is accomplished
through a process known
as poling. Poling consists
of inducing a DC voltage
across the material. The
ferroelectric domains align
to the induced field
resulting in a net
piezoelectric effect
23. Electrostrictive. This material has the same
properties as piezoelectric material, but the
mechanical change is proportional to the square of
the electric field. This characteristic will always
produce displacements in the same direction.
PMN (lead magnesium niobate).
24. Magnetostrictive. When subjected to a
magnetic field, and vice versa (direct and converse
effects), this material will undergo an induced
mechanical strain. Consequently, it can be used as
sensors and/or actuators. (Example: Terfenol-D.)
29. Shape Memory Alloys. When subjected to a
thermal field, this material will undergo phase
transformations which will produce shape
changes. It deforms to its ‘martensitic’ condition
with low temperature, and regains its original
shape in its ‘austenite’ condition when heated
(high temperature). (Example: Nitinol TiNi.)
30. Nitinol is an alloy based on Ni and Ti. It exhibits the
shape-memory effect (SME). Above a certain
temperature it exists in a phase called ‘austenite’, and
makes a transition to ‘martensite’ on cooling through
that temperature. It can be deformed severely when in
the martensitic phase, and yet it recovers its shape on
heating to the austenitic phase. In other words, it
behaves as if it has a memory of the shape it had while
in the austenitic phase. This effect finds two types of
uses in smart structures.
31. Either the shape-recovery tendency is used for
achieving large-throw actuation; or, if the material is
prevented from recovering its shape, a strong internal
stress is generated which changes the effective
stiffness of the medium, thus finding uses in
vibration-control applications. A large number of
applications exist for shape-memory alloys (SMAs)
like Nitinol. An example of an actively smart structure
in this context is the folding-box type protective
shroud. On being heated by solar energy in outer
space, the SMA actuator converts itself from a stowed
to a fully deployed (unfolded) shape, thus providing
protection to the satellite from being hit by the debris
of earlier or abandoned satellite parts.
36. Optical Fibres. Fibres that use intensity,
phase, frequency or polarization of modulation to
measure strain, temperature, electrical/magnetic
fields, pressure and other measurable quantities.
They are excellent sensors.
They are highly compatible with composites
(because both are fibres).
37.
38. Today, the most promising technologies for lifetime efficiency and
improved reliability include the use of smart materials and structures.
Understanding and controlling the composition and microstructure of
any new materials are the ultimate objectives of research in this field,
and is crucial to the production of good smart materials. The insights
gained by gathering data on the behaviour of a material’s crystal inner
structure as it heats and cools, deforms and changes, will speed the
development of new materials for use in different applications.
Structural ceramics, superconducting wires and nanostructural
materials are good examples of the complex materials that will
fashion nanotechnology. New or advanced materials to reduce weight,
eliminate sound, reflect more light, dampen vibration and handle
more heat will lead to smart structures and systems which will
definitively enhance our quality of life.
39. Intelligent structures are smart
structures that have the added capability of
learning and adapting rather than simply
responding in a pre-programmed manner. This
learning and adapting is usually accomplished
by the inclusion of an artificial neural network
(ANN) into the smart structure.