High speed non-contact acoustic inspection method using multi tone burst wave

2016 ◽  
Vol 140 (4) ◽  
pp. 3212-3213
Author(s):  
Tsuneyoshi Sugimoto ◽  
Kazuko Sugimoto ◽  
Nobuaki Kosuge ◽  
Chitose Kuroda ◽  
Noriyuki Utagawa
Keyword(s):  
High Speed ◽  
Tone Burst ◽  
Inspection Method ◽  
Acoustic Inspection

Study on the measurement speed and signal to noise ratio of multi tone burst wave for high speed non-contact acoustic inspection method

2016 ◽  
Vol 140 (4) ◽  
pp. 3212-3212
Author(s):  
Nobuaki Kosuge ◽  
Tsuneyosi Sugimoto ◽  
Kazuko Sugimoto ◽  
Chitose Kuroda ◽  
Noriyuki Utagawa
Keyword(s):  
High Speed ◽  
Signal To Noise Ratio ◽  
Tone Burst ◽  
Signal To Noise ◽  
Inspection Method ◽  
Noise Ratio ◽  
Acoustic Inspection

High-speed noncontact acoustic inspection method for civil engineering structure using multitone burst wave

2017 ◽  
Vol 56 (7S1) ◽  
pp. 07JC10 ◽  
Author(s):  
Tsuneyoshi Sugimoto ◽  
Kazuko Sugimoto ◽  
Nobuaki Kosuge ◽  
Noriyuki Utagawa ◽  
Kageyoshi Katakura
Keyword(s):  
High Speed ◽  
Civil Engineering ◽  
Inspection Method ◽  
Engineering Structure ◽  
Civil Engineering Structure ◽  
Acoustic Inspection

High speed non-contact acoustic inspection method using long distance acoustic irradiation-induced vibration

2017 ◽  
Vol 141 (5) ◽  
pp. 3831-3831 ◽  
Author(s):  
Tsuneyoshi Sugimoto ◽  
Kazuko Sugimoto ◽  
Noriyuki Utagawa ◽  
Kageyoshi Katakura
Keyword(s):  
High Speed ◽  
Long Distance ◽  
Inspection Method ◽  
Acoustic Inspection

Automatic Ultrasonic Inspection Method of Railway Axle and its Remaining Life Prediction

2011 ◽  
Vol 213 ◽  
pp. 291-296 ◽  
Author(s):  
Hong Wei Hu ◽  
Xiong Bing Li ◽  
Xiang Hong Wang ◽  
Yi Min Shao
Keyword(s):  
High Speed ◽  
Fatigue Cracks ◽  
Ultrasonic Inspection ◽  
Inspection System ◽  
Remaining Life ◽  
High Speed Railway ◽  
Inspection Method ◽  
Spiral Trajectory ◽  
Image Element ◽  
The Matrix

With the high speed railway utilization, the probability of defects or fatigue cracks in railway axles is increased. An automatic ultrasonic inspection system for railway axles is presented. This system uses combined probes and inspects the defects with spiral trajectory along the axis of the axle. Through the matrix representation of C-scan image element, a defect edge extraction method is adopted, with which the defect parameters of crack are obtained automatically. Based on these defect parameters, the stress intensity factor is assessed by svm regression and the method to predict remaining life is proposed.

scholarly journals Computer vision–based automatic rod-insulator defect detection in high-speed railway catenary system

2018 ◽  
Vol 15 (3) ◽  
pp. 172988141877394 ◽  
Author(s):  
Ye Han ◽  
Zhigang Liu ◽  
DJ Lee ◽  
Wenqiang Liu ◽  
Junwen Chen ◽  
...  
Keyword(s):  
Computer Vision ◽  
Defect Detection ◽  
High Speed ◽  
Power Transmission ◽  
Estimation Algorithm ◽  
Inspection System ◽  
High Speed Railway ◽  
Inspection Method ◽  
Railway Systems ◽  
Catenary System

Maintenance of catenary system is a crucial task for the safe operation of high-speed railway systems. Catenary system malfunction could interrupt railway service and threaten public safety. This article presents a computer vision algorithm that is developed to automatically detect the defective rod-insulators in a catenary system to ensure reliable power transmission. Two key challenges in building such a robust inspection system are addressed in this work, the detection of the insulators in the catenary image and the detection of possible defects. A two-step insulator detection method is implemented to detect insulators with different inclination angles in the image. The sub-images containing cantilevers and rods are first extracted from the catenary image. Then, the insulators are detected in the sub-image using deformable part models. A local intensity period estimation algorithm is designed specifically for insulator defect detection. Experimental results show that the proposed method is able to automatically and reliably detect insulator defects including the breakage of the ceramic discs and the foreign objects clamped between two ceramic discs. The performance of this visual inspection method meets the strict requirements for catenary system maintenance.

Study on detectable size and depth of defects in noncontact acoustic inspection method

2014 ◽  
Vol 53 (7S) ◽  
pp. 07KC15 ◽  
Author(s):  
Kageyoshi Katakura ◽  
Ryo Akamatsu ◽  
Tsuneyoshi Sugimoto ◽  
Noriyuki Utagawa
Keyword(s):  
Inspection Method ◽  
Acoustic Inspection
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