Correlation of acoustic emission with finite element predicted damages in open-hole tensile laminated composites

Mohammadi, Reza; Najafabadi, Mehdi Ahmadi; Saeedifar, Milad; Yousefi, Jalal; Minak, Giangiacomo

doi:10.1016/j.compositesb.2016.09.101

Cited by 112 publications

(53 citation statements)

References 27 publications

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“…al [27] investigated the damage in open-hole (OH) glass-fibre reinforced polymer (GFRP) composite under tension test with AE technique and compared the results with finite element (FE) predictions. In order to determine the AE characteristics of different damage modes, tension tests were applied to single constituents first, and then the AE events registered during the tension tests of OH UD GFRP were classified according to the results of single constituents' tests [27]. A correlation was built between the AE correspondence of damage modes and the FE progressive damage model predictions.…”

Section: Introductionmentioning

confidence: 99%

Damage mode identification in transverse crack tension specimens using acoustic emission and correlation with finite element progressive damage model

Öz

AhmadvashAghbash

Ersoy

2019

Composites Part B: Engineering

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In this study damage progression in unidirectional composite specimens is investigated. Transverse Crack Tension specimens are used to stimulate damage in a predetermined progressive sequence. Acoustic Emission (AE) registration technique and its location detection capability is used to identify and locate the damage modes during the tension tests. The k-means++ algorithm is applied to cluster similar AE events and obtain reliable correlations between the damage modes and AE characteristics. Damage modes at the end of interrupted tests are identified under an optical microscope and correlated with locations of AE clusters. It is seen that matrix cracks have high amplitude and duration, whereas delaminations have low amplitude and mid-duration, and fibre breaks have high average frequency characteristics. A finite element analysis was performed to predict the progressive failure behaviour including intralaminar failure and delaminations. The correlations between the AE clusters and damage modes are validated with the finite element model. Analysis (FEA)the fibre direction [6,12,13,16,19,25,27].De Groot et. al [6] tested uncured prepreg and cured [0]8 laminates and observed the registration of high peak frequency AE events during UD tension tests which were believed to be due to fibre breaks. Ramirez-Jimenez and Loutas et. al [12,13] proposed a correlation between the high frequency AE events and the

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Section: Introductionmentioning

confidence: 99%

Damage mode identification in transverse crack tension specimens using acoustic emission and correlation with finite element progressive damage model

Öz

AhmadvashAghbash

Ersoy

2019

Composites Part B: Engineering

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“…In this respect FEM may deliver further insight. 114 Though the location itself is a problematic issue (e.g., material anisotropy, signal attenuation, threshold selection, sensor parameters), it seems to be an easier task than failure identification. For the location of "new" damage different experimental and theoretical approaches are recommended.…”

Section: Discussionmentioning

confidence: 99%

Failure Assessment and Evaluation of Damage Development and Crack Growth in Polymer Composites Via Localization of Acoustic Emission Events: A Review

2017

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This review aims at showing how the location of acoustic emission (AE) in loaded polymer composites can be used to get a deeper insight into the onset and growth of damage, and associated failure events and sequences. Different location methods (experimental and theoretical) are briefly introduced along with AE characteristics in time and frequency domains. Linear (1D), planar (2D), and spatial (3D) locations of AE are examined through selected examples. The cited works demonstrate the versatile use of AE. Apart from damage and failure assessment, AE can be used to reconstruct crack growth, and thereby help determine the accurate fracture mechanical parameters. Unlike the detection of the development of damage, the identification of failure mechanisms by analyzing selected AE signal parameters, including their clustering, requires further research. Unraveling the failure mode is, however, a key topic with respect to structural integrity, residual strength, and lifespan expectation of composite parts. A recent major challenge is to establish a reliable, real-time structural health monitoring system making use of located AE events monitored by built-in sensors.

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“…Similarly to impact induced-damage [12][13][14], the drilling process on composites results in deteriorations such as matrix cracking, fiber breakage, fiber pull-out and delamination. Delamination is found to be as the most serious concern because in adition to reducing the structural integrity of the laminate, it also results in poor assembly tolerance and has the potential for long-term performance deterioration [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…A different drill geometry and drilling conditions can decrease the delamination by lowering the thrust force. In practice, it has been shown that the delamination associated with push-out is more severe than the one associated with peel-up [17][18][19][20][21][22]. The propagation of delamination and the size of the damage are influenced by the drilling thrust force developed during the process.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on delamination in nanocomposite drilling

Karimi¹,

Heidary²,

Yousefi³

et al. 2018

FME Transaction

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Correlation of acoustic emission with finite element predicted damages in open-hole tensile laminated composites

Cited by 112 publications

References 27 publications

Damage mode identification in transverse crack tension specimens using acoustic emission and correlation with finite element progressive damage model

Damage mode identification in transverse crack tension specimens using acoustic emission and correlation with finite element progressive damage model

Failure Assessment and Evaluation of Damage Development and Crack Growth in Polymer Composites Via Localization of Acoustic Emission Events: A Review

Experimental investigation on delamination in nanocomposite drilling

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