JPH043304U - - Google Patents

Info

Publication number
JPH043304U
JPH043304U JP4375990U JP4375990U JPH043304U JP H043304 U JPH043304 U JP H043304U JP 4375990 U JP4375990 U JP 4375990U JP 4375990 U JP4375990 U JP 4375990U JP H043304 U JPH043304 U JP H043304U
Authority
JP
Japan
Prior art keywords
crack
measuring device
strain
crack tip
strain gauges
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4375990U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP4375990U priority Critical patent/JPH043304U/ja
Publication of JPH043304U publication Critical patent/JPH043304U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Description

【図面の簡単な説明】
第1図は本考案き裂長さ計測装置の一実施例の
模式図、第2図はき裂先端周辺の応力分布図であ
る。第3図は従来のクラツクゲージによるき裂計
測部分の平面図、第4図は同上におけるクラツク
ゲージの切断の遅れを表わす部分拡大図である。 1……物体、2……き裂、3……ひずみゲージ
、4……切換器、5……ひずみ計測装置、6……
演算装置、7……タイマー、8……クラツクゲー
ジ、9……グリツド、10……き裂開口量、11
……き裂先端、12……当該グリツド。

Claims (1)

    【実用新案登録請求の範囲】
  1. き裂先端周辺のき裂長さ方向延長線上に貼りつ
    けられた複数枚のひずみゲージと、上記ひずみゲ
    ージの適宜数がユニツトとして切換器を介し接続
    されるひずみ計測装置と、上記ひずみ計測装置の
    出力に基づきき裂先端周辺の応力分布からき裂先
    端位置を演算する演算装置とを具えたことを特徴
    とするき裂長さ計測装置。
JP4375990U 1990-04-24 1990-04-24 Pending JPH043304U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4375990U JPH043304U (ja) 1990-04-24 1990-04-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4375990U JPH043304U (ja) 1990-04-24 1990-04-24

Publications (1)

Publication Number Publication Date
JPH043304U true JPH043304U (ja) 1992-01-13

Family

ID=31556447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4375990U Pending JPH043304U (ja) 1990-04-24 1990-04-24

Country Status (1)

Country Link
JP (1) JPH043304U (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008164515A (ja) * 2006-12-28 2008-07-17 Kawasaki Heavy Ind Ltd き裂長さ検出方法およびき裂長さ検出装置
JP2009047639A (ja) * 2007-08-22 2009-03-05 Nippon Oil Corp Cfrp板貼付域の疲労き裂進展のモニタリング方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008164515A (ja) * 2006-12-28 2008-07-17 Kawasaki Heavy Ind Ltd き裂長さ検出方法およびき裂長さ検出装置
JP2009047639A (ja) * 2007-08-22 2009-03-05 Nippon Oil Corp Cfrp板貼付域の疲労き裂進展のモニタリング方法

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