Bending damage evolution from micro to macro level in CFRP laminates studied by high-frequency acoustic microscopy and acoustic emission

被引：12

作者：

Morokov, Egor ^{[1
]}

Levin, Vadim ^{[1
]}

Ryzhova, Tatyana ^{[2
]}

Dubovikov, Evgeny ^{[2
,3
]}

Petronyuk, Yulia ^{[1
]}

Gulevsky, Igor ^{[2
]}

机构：

[1] Russian Acad Sci, Emanuel Inst Biochem Phys, Kosygina St 4, Moscow 119334, Russia

[2] Cent Aerohydrodynam Inst, Zhukovsky St 1, Zhukovskii 140180, Moscow Region, Russia

[3] Moscow Inst Aviat Technol, Volokolamskoe Shosse 4, Moscow 125993, Russia

来源：

COMPOSITE STRUCTURES | 2022年 / 288卷

基金：

俄罗斯基础研究基金会;

关键词：

Ultrasound; Polymer-matrix composites; Bending behavior; Nondestructive imaging; Acoustic microscopy; Microstructure; Acoustic emission; TRANSVERSE CRACKING; COMPOSITE-MATERIALS; ELASTIC PROPERTIES; IN-SITU; FIBER; FAILURE; MICROSTRUCTURE; PROGRESSION; BEHAVIOR; MODEL;

D O I：

10.1016/j.compstruct.2022.115427

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This work presents the results of the experimental investigation of the bending damage evolution in the volume of laminate with a stacking sequence of [0 degrees /90 degrees ]4S and thickness of 4.32 mm. Damage formation under the stepby-step loading (three iterations) was detected by acoustic emission (AE) and was visualized by high-frequency acoustic microscopy. The acoustic emission method revealed the moments of the fiber breakage, formation of cracks and delaminations in the process of bending. AE activity and the energy of AE pulses were related to drops and slope of the loading curves, which corresponded to the damage in the composite volume. The layer-by-layer ultrasound imaging revealed the location of matrix cracking, fiber fracture and interlayer delaminations. We presented the scheme of the step-by-step damage development in the laminate volume, based on experimental data.

引用

页数：11

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