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| | Abstract | | A suspension PS logging using bore hole was difficult to be applied to bore hole with large diameter. In this study, the authors developed a new PS logging probe which is possible to detect the velocity of elastic wave even for large bore hole. The authors measured the velocity of elastic wave using conventional PS logging probe at a large bore hole for cast-in-place, then examined a measurement method that is able to be applied to large bore hole without change of probe specification. As a result, a model of new PS logging probe to solve the problem came into practical and enabled to have same result as so far. |
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