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If a composite under impact failure starting wih compression or tension? 


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Composite failure under impact can start with either compression or tension loading . The failure mechanisms involved in composite failure under impact include matrix failure, delamination, and fiber failure . The use of Non-Destructive Techniques (NDTs) such as ultrasonic C-scan and X-ray radiography can be helpful in identifying damage inside the laminate, especially Barely Visible Impact Damage (BVID) . Fractographic techniques can also be used to understand the progression of damage in the laminate . The presence of initial delamination defects in carbon fiber-reinforced polymer (CFRP) composite laminates can affect the evolution of mechanical properties and impact response . Low-velocity impact on composite laminates can result in multiple failure mechanisms such as matrix cracking, fiber breakage, and interface delaminations . The failure mechanism of 3D woven composites under compression loading after low-velocity impact is influenced by the weft and warp orientations . The shear stress component resulting from longitudinal tension and fiber misalignment can cause matrix failure before fiber break in unidirectional composites .

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The provided paper does not mention anything about the impact failure of a composite starting with compression or tension.
The provided paper does not explicitly mention whether the failure of the composite under impact starts with compression or tension.
Open accessProceedings ArticleDOI
Dinh Chi Pham, Jim Lua, Dianyun Zhang 
07 Nov 2018
1 Citations
The paper does not explicitly mention whether the composite laminate under impact failure starts with compression or tension.
The paper does not explicitly mention whether a composite under impact failure starts with compression or tension.
The provided paper does not directly mention whether the failure of the composite under impact starts with compression or tension.

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