Abstract
Counts of each hit are related to the damage extent of C/C composite material structure. The relative curves of Hit and Count as well as Hit and Energy of AE, attained from static load procedure of C/C composite structure, could reflect the severity of damage extent in a quite noticeable way—the ascending curves of Hit and Count as well as Hit and Energy deviate from their prior linearity and deflection point appears in a sudden when more severe damage occurs; and the ratio of load at this time to the final fracture load is steady for a certain structure. This method could early warn the failure of C/C composite structure effectively and estimate the fracture load. This phenomenon could also provide some suggestion to interpret the evolution of damage field of composite structure.
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Gu, H., Ge, P., Zhang, K., Wang, G. (2015). Deflection on Hit-Count Curves in Acoustic Emission Could Reflect the Damage Extent of C/C Composite Material Structure. In: Shen, G., Wu, Z., Zhang, J. (eds) Advances in Acoustic Emission Technology. Springer Proceedings in Physics, vol 158. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-1239-1_27
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DOI: https://doi.org/10.1007/978-1-4939-1239-1_27
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