منابع مشابه
Applications of ultrasonic NDT to aerospace composites
Whilst existing composite aircraft designs carry additional weight to mitigate the risk of undetected nonconformance to design, new non-destructive characterisation (NDC) methods offer a leaner future for composite designs through complete verification of conformance. The structural-integrity philosophy for composites in current in-service aircraft does not directly accommodate any benefit from...
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Infrared thermography (IRT) and acoustic emission (AE) are the two major nondestructive methodologies for evaluating damage in ceramic matrix composites (CMCs) for aerospace applications. The two techniques are applied herein to assess and monitor damage formation and evolution in a SiC-fiber reinforced CMC loaded under cyclic and fatigue loading. The paper explains how IRT and AE can be used f...
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Carbon nanotubes (CNTs), discovered by Japanese scientist Sumio Iijima, have outstanding material properties such as mechanical, thermal, electrical, and magnetic properties. For example, CNTs are not only lighter than common irons, but also 100 times stronger than the irons. However, CNTs are so tiny, that is, surface area per volume is relatively large. Consequently, they tend to agglomerate....
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Bone injuries and defects, caused by trauma, malformation, osteoporosis and tumours, are therapeutically challenging. Autografts and allografts are ideal treatment approaches for bone regeneration. However, they may be associated with a number of complications, and outcomes are variable. Therefore, bone substitute biomaterials, which not only effectively solved the problem of limited supply, bu...
متن کاملCompressive strength of delaminated aerospace composites.
An efficient analytical model is described which predicts the value of compressive strain below which buckle-driven propagation of delaminations in aerospace composites will not occur. An extension of this efficient strip model which accounts for propagation transverse to the direction of applied compression is derived. In order to provide validation for the strip model a number of laminates we...
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ژورنال
عنوان ژورنال: Journal of Experimental Nanoscience
سال: 2007
ISSN: 1745-8080,1745-8099
DOI: 10.1080/17458080701376348