SPACE DETERMINATION METHOD, SPACE DETERMINATION SYSTEM AND ELASTIC WAVE DETECTION METHOD

PROBLEM TO BE SOLVED: To determine an interface space by a method having less restrictions.SOLUTION: A space determination method using a space determination system 100 comprises: an input step of inputting an elastic wave into mortar M; a receiving step of receiving the elastic wave propagating thr...

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Bibliographic Details
Main Authors HATTORI HIROSHI, MATSUSHITA HIROAKI, HATANAKA AKIHIDE
Format Patent
LanguageEnglish
Japanese
Published 15.11.2018
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Summary:PROBLEM TO BE SOLVED: To determine an interface space by a method having less restrictions.SOLUTION: A space determination method using a space determination system 100 comprises: an input step of inputting an elastic wave into mortar M; a receiving step of receiving the elastic wave propagating through the mortar M; a transform step of subjecting the elastic wave received by the receiving step to wavelet transform to acquire a wavelet image; and a determining step of determining the position and size of a space G from the wavelet image acquired in the transform step by referring to a reference wavelet image previously acquired from a plurality of samples S1-S9 having spaces G1-G9 having different positions and sizes.SELECTED DRAWING: Figure 4 【課題】制約の少ない方法で界面の空隙を判定する。【解決手段】空隙判定システム100を用いた空隙判定方法は、モルタルMに弾性波を入力する入力工程と、モルタルMを伝播する弾性波を受信する受信工程と、受信工程によって受信された弾性波にウェーブレット変換を施してウェーブレット画像を取得する変換工程と、位置及び大きさが異なる空隙G1〜G9を有する複数のサンプルS1〜S9から予め取得された参照用ウェーブレット画像を参照することによって、変換工程によって取得されたウェーブレット画像から空隙Gの位置及び大きさを判定する判定工程とを含む。【選択図】図4
Bibliography:Application Number: JP20170080424