Analysis of acoustic emission signal characteristics based on the crack pattern of stress corrosion cracking

Shao, Yujiao; Yu, Yuan; Zhang, Yin; Wei, Shaowen; Li, Xuefeng

doi:10.1109/icsenst.2016.7796216

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…Çelik materyali üzerindeki etkinliğinden dolayı çelik tel, petrol boruları ve çelik saclar gibi materyallerin test işleminde de MKA yöntemi kullanılmaktadır. Diğer bir tahribatsız yöntem olan AE yöntemi dinamik tahribatsız test açısından geniş bir kullanım alanına sahiptir [39]. Beton bloklar, yağ, su ve gaz boruları ve çelik tanklar AE yöntemi ile test edilmektedir.…”

Section: Tahri̇batsiz Test Yöntemleri̇ni̇n Karşilaştirilmasiunclassified

Tahribatsız Test Yöntemleri: Karşılaştırmalı Bir Derleme Çalışması

Kara

Erdal²,

Çelik³

2017

Marmara Fen Bilimleri Dergisi

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Bu çalışmada, materyallerin kusur analizini gerçekleştirerek güvenli materyal kullanımı sağlayan tahribatsız test yöntemleri incelenmektedir. Tahribatsız test işleminde kullanılacak yöntemin, çalışma şartları açısından test edilecek materyal üzerinde uygulanabilir olması gerekmektedir. Örneğin girdap akımları yöntemi, çalışma şartları gereği ferromanyetik metalleri test edemezken, ferro olmayan metalleri test edebilmektedir. Bu şartlar göz önüne alınarak seçilen test yöntemi ile materyal düzenli aralıklarla tahribatsız muayene edilerek kusurlu materyal bölgeleri tespit edilmektedir. Bu şekilde güvenli materyal kullanımı sağlanarak büyük maddi kayıplar önlenmiş olur. Tahribatsız test yöntemlerinin bir kısmı güvenilir sonuçlar üretmesi açısından endüstride yaygın olarak kullanılmaktadır. Bu bağlamda manyetik kaçak akı, akustik emisyon, ultrasonik, girdap akımları ve radyografi yöntemleri bu çalışmada incelenmiştir. Yöntemlerin işleyiş prensipleri, literatürde yapılmış çalışmalar ve gerçekleştirilmiş deneyler incelenerek açıklanmıştır. Yöntemler karşılaştırmalı olarak seçilen kriterlere göre sınıflandırılmıştır. Bu çalışma ile geniş içeriğe sahip bir derleme ortaya çıkarılmıştır.

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Section: Tahri̇batsiz Test Yöntemleri̇ni̇n Karşilaştirilmasiunclassified

Tahribatsız Test Yöntemleri: Karşılaştırmalı Bir Derleme Çalışması

Kara

Erdal²,

Çelik³

2017

Marmara Fen Bilimleri Dergisi

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“…AE technology is a passive detection technology with real-time characteristics that can accurately reflect the changes in a material's interior. 13,14 Compared with other nondestructive testing technologies, AE technology has an obvious advantage that several AE probes can be used to monitor a whole structure in real time. 15 As a nondestructive testing and safety monitoring method, AE technology has been applied in many fields, such as aerospace, 16 material engineering, 17,18 mechanical equipment, 19,20 structural engineering, 21,22 and civil engineering.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of pretensioned bolts under cyclic loading: Damage assessment using acoustic emission

Zheng

Zhu

et al. 2019

International Journal of Distributed Sensor Networks

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Understanding the acoustic emission effects on bolts under cyclic loading is of great significance for the support of roadways. The presented research focuses on the acoustic emission characteristics of bolts under cyclic loading. The following main conclusions were drawn: (1) With a higher loading frequency, the acoustic emission counts rate increases, while the total energy released in a given cyclic loading path decreases. (2) A fitting formula is established according to the relationship between the tension amplitude and cumulative acoustic emission counts, which can analyze the tension magnitude level of the cyclic load. (3) A damage factor for a cyclic load is proposed based on the acoustic emission counts generated during the cyclic and monotonic loading process that can analyze the degree of damage to the anchorage system caused by the cyclic load. (4) Based on the spatial distribution of the acoustic emission orientation points and the acoustic emission energy generated during the pull-out process, the acoustic emission damage evolution process of the anchorage specimens is deduced, and the mechanism of the high stability of the pretension anchorage system after cyclic loading is analyzed. The above conclusions may provide some experimental references for the application of acoustic emission technology in bolts supporting roadways.

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“…(16,(19)(20)(21) Many research results show that there is a very close relationship between AE phenomena and material fracture. (22)(23)(24)(25)(26)(27) Therefore, AE monitoring has the potential to achieve remote real-time monitoring of the initiation and propagation of SCC. AE phenomena refers to elastic wave phenomena in materials and structures produced by stress or fracture due to the rapid release of energy.…”

Section: Introductionmentioning

confidence: 99%

Characteristic of Acoustic Emission Signal from Stress Corrosion Cracking in Low-Carbon Nitrogen-Enhanced Stainless Steel

2017

Sensors and Materials

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The problem of stress corrosion cracking (SCC), which causes sudden failure of metals subjected to stress in a high-temperature, high-pressure water environment, is studied. Acoustic emission (AE) monitoring is a promising method for detecting the initiation and propagation of SCC. In this study, pencil-lead breaks are used as AE signal sources to first validate the parameters for the verification of the finite element modeling of microcracking. Then, a simplified fracture propagation model of low-carbon nitrogen-enhanced (316LN) stainless steel is established on the basis of moment tensor theory. Finally, the inner connection between the energy release rate of the AE source and the morphological aspect of crack formation is analyzed. The results of modal analysis show that the amount of energy released by the growing crack is linearly proportional to crack depth. Moreover, their frequency characteristics are almost unchanged from the results of analysis by fast Fourier transform. Therefore, SCC initiation and propagation in 316LN stainless steel can be evaluated by this detection method. Moreover, this analysis method based on the energy release rate of the AE source can also be extended to almost all solid materials and structural crack detection.

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Analysis of acoustic emission signal characteristics based on the crack pattern of stress corrosion cracking

Cited by 3 publications

References 11 publications

Tahribatsız Test Yöntemleri: Karşılaştırmalı Bir Derleme Çalışması

Tahribatsız Test Yöntemleri: Karşılaştırmalı Bir Derleme Çalışması

Experimental investigation of pretensioned bolts under cyclic loading: Damage assessment using acoustic emission

Characteristic of Acoustic Emission Signal from Stress Corrosion Cracking in Low-Carbon Nitrogen-Enhanced Stainless Steel

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