JPS58158508A - High temperature strain measuring method - Google Patents

High temperature strain measuring method

Info

Publication number
JPS58158508A
JPS58158508A JP4103682A JP4103682A JPS58158508A JP S58158508 A JPS58158508 A JP S58158508A JP 4103682 A JP4103682 A JP 4103682A JP 4103682 A JP4103682 A JP 4103682A JP S58158508 A JPS58158508 A JP S58158508A
Authority
JP
Japan
Prior art keywords
strain
test piece
heating furnace
temperature strain
high temperature
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
JP4103682A
Other languages
Japanese (ja)
Inventor
Toshihide Igari
敏秀 猪狩
Katsuya Setoguchi
瀬戸口 克哉
Masayoshi Nakano
中野 庄喜
Yoshiyuki Hamagami
義行 浜上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP4103682A priority Critical patent/JPS58158508A/en
Publication of JPS58158508A publication Critical patent/JPS58158508A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • G01B11/16Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/165Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

PURPOSE:To measure strain distribution and local strain accurately, by arrainging a test piece having symmetrical parts in a heating furnace, and measuring one side of the symmetrical parts of the test piece by a Moir e method and the other side by a grid method simultaneously. CONSTITUTION:The test piece 1 has the symmetrical parts 1a and 1b. Heat resisting grids 2 are arranged on the surfaces, respectively. The symmetrical parts 1a and 1b of the test piece 1 are arranged so as to face quartz rods 4a and 4b of the heating furnace 3. The strain of the test piece 1 due to the high temperature is measured by a Moir e strain gage 5 and a grid strain gage 5 through the quartz rods 4a and 4b.

Description

【発明の詳細な説明】 この発明は高温でのひずみを計測する方法の改良に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION This invention relates to improvements in methods for measuring strain at high temperatures.

従来、高温に晒される試験片のひずみを胴側する場合に
は、加熱炉に石英棒を嵌め込んだ開口部を通して、炉内
に置いた試験片の表面に設けた耐熱格子(500本/ 
1nck+程度)の変化を見る訳であるが、耐熱格子に
よる光の干渉縞を利用するモレア法や、耐熱格子の一部
をそのまま拡大して観察する格子法などの手法が用いら
れている。
Conventionally, when straining a test piece exposed to high temperatures, a heat-resistant grid (500 pieces per
For this purpose, a change of about 1 nk+) is observed, and methods such as the Morea method, which utilizes the interference fringes of light produced by a heat-resistant grating, and the grating method, in which a part of the heat-resistant grating is directly enlarged and observed, are used.

ところがモレア法は試験片の部分的なひずみ分布を計測
するには適しているが、切欠底等の局所ひずみを計測す
るには精度の点で問題がある。一方、格子法は試験片切
欠底等の局所ひずみを計測するには適しているか、逆に
試験片切欠底等の部分的なひずみ分布を計測するには適
さない不具合がある。従ってモレア法と格子法により同
時にひずみ計測が実施できればひずみ分布及び局所ひず
みが精度よ<言]測できるが。
However, although the Morea method is suitable for measuring the local strain distribution of a test piece, it has problems with accuracy when measuring local strain at the bottom of a notch, etc. On the other hand, the lattice method has a problem in that it is not suitable for measuring local strain at the bottom of a test piece, etc., but it is not suitable for measuring local strain distribution at the bottom of a test piece, etc. Therefore, if strain measurements can be performed simultaneously using the Morea method and the grid method, the strain distribution and local strain can be measured with high accuracy.

従来同一試験片に対してモレア法と格子法を適用し、特
に時間とともに変化するクリープ変形等の計測で問題と
なる同時ひずみを計測する手法は提供されていなかった
Conventionally, there has been no method available for measuring simultaneous strain, which is a problem when measuring creep deformation, which changes over time, by applying the Morea method and the lattice method to the same specimen.

この発明は加熱炉内に対称部を有する試験片を配設し、
同試験片の対称部の一側の高温ひずみをモレア法で、残
りの他側の高温ひずみを格子法によって同時に計測する
高温ひずみ計測方法であるから、上記の要求に答えるこ
とが可能となる。
This invention arranges a test piece having a symmetrical part in a heating furnace,
This high-temperature strain measurement method simultaneously measures the high-temperature strain on one side of the symmetrical part of the same test piece using the Morea method, and the high-temperature strain on the other side using the lattice method, making it possible to meet the above requirements.

以下本発明を図面を参照しながら更に説明する。The present invention will be further explained below with reference to the drawings.

図において1は試験片でJ)って左右に(図面」二では
上下に)対称部]、n ・11)を有しており。
In the figure, 1 is a test piece, which has symmetrical parts J) on the left and right (up and down in Drawing 2) and n and 11).

その表面には夫々耐熱格子2を配設さねでいる。A heat-resistant grid 2 is disposed on each surface.

この試験片1は加熱炉3内に収納され加熱さ11るが、
加熱炉3の壁を貫通して対称に挿入さI]る一対の石英
棒411・41)の前方に夫々試験片1の対称部I n
・]、bか位置するように位置決めされている。
This test piece 1 is stored in a heating furnace 3 and heated 11.
A symmetrical portion of the test specimen 1 is placed in front of a pair of quartz rods 411, 41) inserted symmetrically through the wall of the heating furnace 3, respectively.
・], b is positioned.

上記石英棒4aは試験片Iの一方の対称部I11のひず
みをモレア法によって測定する場合に用い、加熱炉3外
部にはモレアひずみ5−111iJ D 5か。
The quartz rod 4a is used when measuring the strain in one symmetrical part I11 of the test piece I by the morea method, and a morea strain of 5-111iJ D 5 is placed outside the heating furnace 3.

また上記石英棒41〕は試験片1の他方の対称部1 b
のひずみを格子法によって測定する場合に用い、加熱炉
3外部は格子ひずみ8」側型6が配設されている。
The quartz rod 41] is the other symmetrical part 1b of the test piece 1.
A lattice strain 8'' side mold 6 is disposed outside the heating furnace 3 to measure the strain of the lattice using the lattice method.

上記したように試験片1は左右に対称部】a・1hを有
していて加熱炉3により加熱されるので、その高温に3
1゛り牛しるひずみは左右の対称部]、a・11)て等
しくなる。
As mentioned above, the test piece 1 has a symmetrical part 】a・1h on the left and right and is heated by the heating furnace 3, so the high temperature
The strain of 1゛is equal to the left and right symmetrical parts], a・11).

一方、そのひずみは石英棒4a・41rを介して夫々上
レアひず7ト計副器5および格子ひずみn1測器6て測
定されるので、高温での同時ひずみ旧劇が可能となった
On the other hand, since the strain is measured through the quartz rods 4a and 41r by the upper layer strain meter auxiliary device 5 and the lattice strain n1 meter 6, it is possible to simultaneously measure the strain at high temperatures.

なお、加熱炉3とし−Cは、電気炉・高周波誘導炉など
を用いることかできるか、試験片1を均一に加熱しなけ
ればならないことは言うまでもない。
It goes without saying that the heating furnace 3 -C may be an electric furnace, a high frequency induction furnace, or the like, and that the test piece 1 must be heated uniformly.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の方法を具現化した装置の図である。 1 試験片、1薯l・1b゛対称部、2:耐熱格子、3
°加熱炉、 4 ++・41〕:石英棒、5:モレアひ
ずみ計測器、6:格子ひずみ計測器。 手続補正書(自発) 昭和57年 6 月 //  日 特許庁 長官    殿 発明の名称 高湿0・ずみ計測方法 補正をする者 事件どの関係 特許出願人 41  所    東京都f代IFI〆メムの内−−−
J−1’+5爵]Q名 称(620)三菱重工業株式会
社 代  理  人 イ」  所    東京都丁代田区丸の内−丁18□1
5番] 13三菱重工業株式会?1内(m 2]2T−
,3111Q昌 氏  名(°”1″士 坂  1用    噴(210
、補i[の内容             11区曲の
間早l祝1刀」り栴61、 特許請求の範囲を次のとお
り補正する。 「加熱炉内に対称部を有する試験片を配設しイ則 同試験片の対称部の一部の高温ひずみをモアレ法で、残
りの他側の高温のひずみを格子法によって同時に計測す
ることを特徴とする高温ひずみ計測方法。」 ゛ 2 明細書中第1頁18行目、第2頁2行目・8行
目・11行目・17行目、第3頁16行目・14行目、
および第4頁5行目・17行目にある「モレア」を「モ
アレ」と訂正する。 以  上 65−
The drawing is a diagram of an apparatus embodying the method of the invention. 1 Test piece, 1 liter/1b symmetrical part, 2: Heat-resistant grid, 3
°Heating furnace, 4 ++・41]: Quartz rod, 5: Morea strain measuring instrument, 6: Grid strain measuring instrument. Procedural amendment (voluntary) June 1980 // Commissioner of the Japan Patent Office Name of the invention Person making the amendment to the high humidity measurement method Case related to the patent applicant 41 Place Tokyo, F, IFI, Memu- ---
J-1' + 5th Duke] Q Name (620) Mitsubishi Heavy Industries Co., Ltd. Agent Address: 18□1, Marunouchi, Choyoda-ku, Tokyo
No. 5] 13 Mitsubishi Heavy Industries Corporation? Within 1 (m 2) 2T-
, 3111Q Mr. Masaru Name (°"1" Mr. Saka 1 for Fuu (210
, Supplement i [Contents of 11th ward song no mahayasa l kei 1to” Risa 61, The scope of the claims is amended as follows. ``A test piece with a symmetrical part is placed in a heating furnace, and the high-temperature strain in a part of the symmetrical part of the same test piece is measured simultaneously using the Moiré method, and the high-temperature strain on the other side is measured simultaneously using the lattice method. A high-temperature strain measurement method characterized by eye,
And "morea" in lines 5 and 17 of page 4 is corrected to "moire". Above 65-

Claims (1)

【特許請求の範囲】 加熱炉内に対称部を有する試験片を配設し。 同試験片の対称部の一側の高温ひずみをモレア法で、残
りの他側の高温のひずみを格子法によって同時に計測す
ることを特徴とする高温ひずみ計測方法。
[Claims] A test piece having a symmetrical portion is placed in a heating furnace. A high-temperature strain measurement method characterized by simultaneously measuring the high-temperature strain on one side of the symmetrical part of the same test piece using the Morea method and the high-temperature strain on the other side using the lattice method.
JP4103682A 1982-03-16 1982-03-16 High temperature strain measuring method Pending JPS58158508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4103682A JPS58158508A (en) 1982-03-16 1982-03-16 High temperature strain measuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4103682A JPS58158508A (en) 1982-03-16 1982-03-16 High temperature strain measuring method

Publications (1)

Publication Number Publication Date
JPS58158508A true JPS58158508A (en) 1983-09-20

Family

ID=12597167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4103682A Pending JPS58158508A (en) 1982-03-16 1982-03-16 High temperature strain measuring method

Country Status (1)

Country Link
JP (1) JPS58158508A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63117201A (en) * 1986-10-29 1988-05-21 インタ−ナショナル・ビジネス・マシ−ンズ・コ−ポレ−ション Body supporter
JPH05296735A (en) * 1992-04-15 1993-11-09 Agency Of Ind Science & Technol High precision non-contact strain measurement method and device therefor
JPH07144082A (en) * 1993-11-22 1995-06-06 Hirose Mfg Co Ltd Fully rotary bobbin
JP2009162562A (en) * 2007-12-28 2009-07-23 National Institute For Materials Science Thermal expansion coefficient measurement method and apparatus for same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4970649A (en) * 1972-10-02 1974-07-09
JPS5030469A (en) * 1973-07-17 1975-03-26
JPS5336202A (en) * 1976-09-13 1978-04-04 Rca Corp Method of producing stylus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4970649A (en) * 1972-10-02 1974-07-09
JPS5030469A (en) * 1973-07-17 1975-03-26
JPS5336202A (en) * 1976-09-13 1978-04-04 Rca Corp Method of producing stylus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63117201A (en) * 1986-10-29 1988-05-21 インタ−ナショナル・ビジネス・マシ−ンズ・コ−ポレ−ション Body supporter
JPH05296735A (en) * 1992-04-15 1993-11-09 Agency Of Ind Science & Technol High precision non-contact strain measurement method and device therefor
JPH07144082A (en) * 1993-11-22 1995-06-06 Hirose Mfg Co Ltd Fully rotary bobbin
JP2009162562A (en) * 2007-12-28 2009-07-23 National Institute For Materials Science Thermal expansion coefficient measurement method and apparatus for same

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