TFM imaging of aeroengine casing ring forgings with curved surfaces using acoustic field threshold segmentation and vector coherence factor

• Published in: Chinese journal of aeronautics Vol. 35; no. 11; pp. 401 - 415
• Main Authors: GUAN, Shanyue, WANG, Xiaokai, HUA, Lin, LI, Yixuan
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.11.2022; Hubei Key Laboratory of Advanced Technology for Autornotive Components,Wuhan University of Technology,Wuhan 430070,China%Hubei Collaborative Innovation Center for Automotive Components Technology,Wuhan 430070,China%School of Automotive Engineering,Wuhan University of Technology,Wuhan 430070,China
• Subjects: Acoustic Field Threshold Segmentation (AFTS); Aeroengine casing; Curved surfaces; Total Focusing Method (TFM); Vector Coherence Factor (VCF); Curved surfaces; Vector Coherence Factor (VCF); Acoustic Field Threshold Segmentation (AFTS); Aeroengine casing; Total Focusing Method (TFM); Acoustic Field Threshold Segmentation(AFTS); Total Focusing Method(TFM); Vector Coherence Factor(VCF)

The aeroengine casing ring forgings have complex cross-section shapes, when the conventional ultrasonic or phased array is applied to detect such curved surfaces, the inspection images always have low resolution and even artifacts due to the distortion of the wave beam. In this article, taking a typ...