Capability of Digital Shearography in Crack Defect Inspection

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Tizmaghz Nejad Mohamad; AKBARI DAVOOD; Ghobadi Shobeir

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Journal Paper

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Journal: Non-Destructive Testing Technology Year:2021 | Volume:2 | Issue:8 Page(s): 41-61

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Information Journal Paper

Title

Capability of Digital Shearography in Crack Defect Inspection

Author(s)

Tizmaghz Nejad Mohamad | AKBARI DAVOOD | Ghobadi Shobeir | Issue Writer Certificate

Keywords

Shearography

Nondestructive Testing (NDT)

Defect measurement

Defect detection

Crack

Abstract

This paper introduces and reviews digital Shearography applications in the detection and measurement of Crack type defects in materials. Digital Shearography is a laser light-based NDT method for fullfield and non-contact measurement of an object deformation (surface displacement derivatives). This method is equivalent to a full-area strain gauge that allows you to observe the strain distribution over a large area. Shearography is used to inspect and non-destructive evaluation of different materials. However, because of some advantages of Shearography compared to traditional methods in the evaluation of some materials like composites, and on the other hand, the popularity of these structures in important industries such as aerospace and military, Shearography is increasingly being considered. Regarding understanding the significance and influences of the shape and geometry of defects in Shearography results, this article attempts to prove and introduce digital Shearography as a superior method in the field of both quantitative and qualitative evaluation of sub-Cracks in various materials by reviewing previous studies and research. As concluded form previous research the loading, shear distance and direction, Crack length, depth, and angle have the most influence on the results and fringe patterns formation. Shearography ability to estimate Crack geometry has also been demonstrated and proven.

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APA: Copy

Tizmaghz Nejad, Mohamad, AKBARI, DAVOOD, & Ghobadi, Shobeir. (2021). Capability of Digital Shearography in Crack Defect Inspection. NONDESTRUCTIVE TESTING TECHNOLOGY, 2(8 ), 41-61. SID. https://sid.ir/paper/414893/en

Vancouver: Copy

Tizmaghz Nejad Mohamad, AKBARI DAVOOD, Ghobadi Shobeir. Capability of Digital Shearography in Crack Defect Inspection. NONDESTRUCTIVE TESTING TECHNOLOGY[Internet]. 2021;2(8 ):41-61. Available from: https://sid.ir/paper/414893/en

IEEE: Copy

Mohamad Tizmaghz Nejad, DAVOOD AKBARI, and Shobeir Ghobadi, “Capability of Digital Shearography in Crack Defect Inspection,” NONDESTRUCTIVE TESTING TECHNOLOGY, vol. 2, no. 8 , pp. 41–61, 2021, [Online]. Available: https://sid.ir/paper/414893/en

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