画像処理援用き裂進展試験システムの開発と中高温下方値制御疲労試験への応用

概要

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A new automated crack growth test system with the aid of an image processing techniique wasde-veloped. This system consists of a mechanical stage with a CCD camera, an image processing unit and a persoal computer. ACCD camera with an image guidescope was used to monitor them iicroscopi in age of a cracktip. This image a Thoud the cracktip was processed and analyzed by using atem Plate Scanning technique to make a realtime recognition of the crack tip. The crack length was dete mined from the detected cracktipion cation. The crack growthrate and stressiten Sity fact or were also calculated and recorded on a magneticmedium. This system was wide lyapplicable to various fracture mecbanics tests with imitations in sample shape, environment and so on. Severalntroned fatigue crack growth tests both at room and elevated temperatures were conducted to demonstrate there liability, Performance and precision of this system.
社団法人日本材料学会の論文
1991-02-15