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Ultrasonic methods enjoy the great capabilities in solving various problems associated with structural engineering and engineering materials. In this seminars, a host of research works and studies in this field carried out by the speaker will be presented to demonstrate the broad spectrum of their applications in aerospace engineering. Focus will be on nondestructive evaluation (NDE) and characterization of aerospace materials such as composites. Topics to be presented in the seminar include (1) 3-D imaging of damage in composites, (2) echo det ....etc

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Mechanical cutting of visco-elastic polymers is experimentally investigated using sharp knives. The knife is aligned orthogonally to the substrate's surface, and is forced into the substrate. Two cutting scenarios are investigated i) plunge cutting, where the knife edge moves directly into the substrate, and ii) slicing, where the knife shears tangentially as it moves into the substrate. For slicing fracture lines emanating from the cut are observed, and the threshold forces for cutting are considerably smaller, indicating that the two cutting ....etc

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Composites are combinations of two more separate materials on a microscopic level, in a controlled manner to give desired properties. The properties of a composite will be different from those of the constituents in isolation.
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When two materials are combined together to form a composite, one of the materials will be in Reinforcing phase and the other material will be in Matrix phase. Typically, reinforcing material in the f ....etc

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A new generation of materials called smart materials is changing the way a structural system is going to be designed, built and monitored. Advances in composite materials, instrumentation and sensing technology (fiber-optic sensors) in combination with a new generation of actuator systems based on Piezoelectric ceramics and shape Memory Alloys have made this possible.

Shape memory alloys have found applications in a variety of high performance products, ranging from aircraft hydraulic coupling and electrical connectors to surgical suture anc ....etc

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Nondestructive testing has become an essential tool for failure prevention, conditionbased maintenance, structural health monitoring, as well as for quality control during production processes. Ultrasound and Acousto-Optics are applied to examine the mechanical properties of isotropic and anisotropic materials, and also to detect material defects. Fiber reinforced composites are ubiquitous in many industries, yet the interaction of ultrasound with such materials is particularly challenging because of effects such as surface roughness, the fact ....etc

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smart materials
A new generation of materials called smart materials is changing the way a structural system is going to be designed, built and monitored. Advances in composite materials, instrumentation and sensing technology (fiber-optic sensors) in combination with a new generation of actuator systems based on Piezoelectric ceramics and shape Memory Alloys have made this possible.

Shape memory alloys have found applications in a variety of high performance products, ranging from aircraft hydrau ....etc

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With future threats emerging and the overall needs of the military changing, the armor mechanics community is always exploiting new materials and technologies to stay at the forefront of defense capabilities. Along these lines, this presentation will cover some of the research conducted at the Army Research Laboratory (ARL) and will be given in two parts. The first part will cover recent work completed on the ballistic testing of two silicon carbides with varying porosity distributions. The second part will go over a brief introduction of the w ....etc

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They are the materials which have the capability to respond to changes in their condition or the environment to which they are exposed, in a useful and usually repetitive manner. They are called by other names such as,

· Intelligent materials,

· Active materials and

· Adoptive materials.

The devises that are made using smart materials are called Smart Devices. Similarly the systems and structures that have incorporated smart materials are called Smart Systems and Smart Structures. In other words the complexi ....etc

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A research on the advanced construction materials has given a push by many factors. In late eighty's, the aerospace industry has seen a steady decline; alternative use of new materials develop for aerospace industry is made possible to construction sector. Exotic materials such as advance polymers & high performance carbon fibre sheeting are researched upon to develop their potential use in the construction of the corrosion free buildings.
The advanced materials are looking on as next generation materials for high techbuildings. Materials that ....etc

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