著者

吹上 紀夫 津島 聰 小野 正夫 市川 清 山本 雅昭 富山 紀光

出版者

独立行政法人 海上技術安全研究所

雑誌

船舶技術研究所報告 (ISSN:0495775X)

巻号頁・発行日

vol.28, no.4, 1991-07-30

著者

津島 聰 吹上 紀夫

出版者

公益社団法人 日本コンクリート工学会

雑誌

コンクリート工学論文集 (ISSN:13404733)

巻号頁・発行日

vol.1, no.2, pp.51-58, 1990-07-01 (Released:2012-11-13)

参考文献数

3

被引用文献数

1

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It is possible to predict detectable defects diameter in the inner parts of mortar and concrete, from relations between echo-height from defect and scattered echoes from both fine and coarse aggregates ; the relations can be evident by making use of a longitudinal probe with a central frequency of 1 MHz and a double crystal probe with a 1 MHz. An A-scope has been generally used for ultrasonic testing (UT), whose users need the technical knowledge and experience for interpretation or analysis of the echoes received. If the imaging of defects is realized by the B-scope, users of the UT do not need the technical knowledge and experience. The joint reseachers have succeeded in imaging defects and embedded bars by the use of the B-scope.