This document discusses smart materials, which are materials that can change their properties in a controlled way in response to external stimuli like stress, temperature, or electric/magnetic fields. It describes several types of smart materials including piezoelectric materials, smart fluids, shape memory alloys, and magnetostrictive materials. Piezoelectric materials generate electric charges when deformed and change shape when exposed to electric currents. Smart fluids like electro-rheological and magneto-rheological fluids can change viscosity dramatically from a thick fluid to a near-solid within milliseconds under electric or magnetic fields. Shape memory alloys and polymers can change shape under temperature changes. Magnetostrictive materials alter shape under magnetic fields and magnetization
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.
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
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.
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
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.
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 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
SMART MATERIALS by PERAM SHYAMSUNDAR REDDY from JNTUA.Shyam812
This presentation gives a brief idea about the importance of smart materials in the present research world and their applications in all the fields of technology.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
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.
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 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
SMART MATERIALS by PERAM SHYAMSUNDAR REDDY from JNTUA.Shyam812
This presentation gives a brief idea about the importance of smart materials in the present research world and their applications in all the fields of technology.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
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/
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.
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.
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.
3. Smart Materials - Introduction
• Intelligent materials or Responsive materials
• Respond to environmental stimuli with particular changes in some variables
• Depending on changes in some external conditions smart materials change either
their properties (mechanical, electrical, appearance) their structure or
composition or their functions
• These materials 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.
4. Smart Materials - Types
There are many types of smart materials. Some of the examples include
Piezo electric materials
Smart fluids
Electro-rheostatic (ER)
magneto-rheostatic (MR)
Magnetostrictive
Shape memory alloy, shape memory polymer
5. Common smart materials and associated stimulus-
response
Source: Susmita Kamila / American Journal of Applied Sciences 10 (8): 876-880, 2013
6. Piezo electric materials
• When deformed it gives a small but measurable electrical discharge
• Alternately, when an electrical current is passed thru’ a piezo electric material it
experiences a significant increase in size (up to 4% change in volume)
• Widely used as sensors in different environments
• Used to measure fluid composition, fluid density, fluid viscosity, or the force of an
impact
• Used as air bag sensor in vehicles
7. Smart Fluids
• Electro-rheostatic (ER) and magneto-rheostatic (MR)
• ER and MR are smart fluids, which can experience a dramatic change in their
viscosity
• Can change from a thick fluid to nearly a solid substance within the span of a
millisecond, when exposed to a magnetic or electric field
• The effect can be completely reversed just as quickly when the field is removed
• MR fluid experiences a viscosity change when exposed to magnetic field, while ER
fluid experiences similar change in an electric field
8. Magnetostrictive Materials
• Exhibit change in shape under the influence of magnetic field and also exhibit
change in their magnetization under the influence of mechanical stress
