JPH10185798A - Stress-load environment-resistant-property evaluation method - Google Patents
Stress-load environment-resistant-property evaluation methodInfo
- Publication number
- JPH10185798A JPH10185798A JP34494396A JP34494396A JPH10185798A JP H10185798 A JPH10185798 A JP H10185798A JP 34494396 A JP34494396 A JP 34494396A JP 34494396 A JP34494396 A JP 34494396A JP H10185798 A JPH10185798 A JP H10185798A
- Authority
- JP
- Japan
- Prior art keywords
- load
- jig
- stress
- environment
- sample
- 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.)
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Links
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は応力負荷耐環境性評
価法に関する。The present invention relates to a method for evaluating environmental resistance to stress load.
【０００２】[0002]
【従来の技術】種々の産業用機器を構成する材料の使用
環境における耐性を評価するのに、応力無負荷の条件で
あれば容器内雰囲気の温度，圧力及び組成を調整できる
疑似環境再現装置を用いてその容器内に試料を設置する
だけで良い。しかし多くの産業用機器部品は、例えばボ
イラ用管ならば内外圧力差により、タービン翼ならば回
転による遠心応力により応力負荷の状態にある。応力に
よる影響は、例えば、ＳＣＣ(Stress Corrosion Cracki
ng, 応力腐食割れ）にみられるように無視できないこと
がある。2. Description of the Related Art In order to evaluate the resistance of materials constituting various industrial equipment in the use environment, a pseudo-environment reproduction device capable of adjusting the temperature, pressure and composition of the atmosphere in a container under the condition of no stress is used. It is only necessary to use and place the sample in the container. However, many industrial equipment components are in a state of stress loading due to, for example, a pressure difference between the inside and outside of a boiler tube and a centrifugal stress caused by rotation of a turbine blade. The influence of stress is, for example, SCC (Stress Corrosion Cracki).
ng, stress corrosion cracking).
【０００３】従来ＳＣＣの評価で用いられている方法
は、個々の板状試料にねじの締め付けにより曲げ応力を
負荷できる治具を取り付け、治具ごと疑似環境再現装置
の容器に設置する方法が知られている。また、クリープ
試験機及び疲労試験機等の荷重装置の試料部に疑似環境
再現装置の容器を取り付けて、引張・圧縮荷重下での耐
環境性を評価する方法が知られている。Conventionally, a method used in the evaluation of SCC is to attach a jig capable of applying a bending stress to each plate-like sample by tightening a screw and install the jig together with the jig in a container of a simulated environment reproducing apparatus. Have been. Further, a method is known in which a container of a simulated environment reproducing device is attached to a sample portion of a load device such as a creep tester and a fatigue tester, and the environmental resistance under a tension / compression load is evaluated.
【０００４】[0004]
【発明が解決しようとする課題】しかし、ねじの締め付
けにより曲げ応力を負荷できる治具を用いる方法では、
試料及び治具の熱膨張差により、温度を変えた場合初期
の設定通りの曲げ応力負荷が維持されていない。またク
リープ試験機及び疲労試験機等の荷重装置の試料部に疑
似環境再現装置の容器を取り付けた方法では、曲げ応力
下での耐環境性を評価することはできない。However, in a method using a jig capable of applying a bending stress by tightening a screw,
When the temperature is changed due to the difference in thermal expansion between the sample and the jig, the bending stress load as initially set is not maintained. Further, in a method in which a container of a simulated environment reproduction device is attached to a sample portion of a load device such as a creep tester and a fatigue tester, the environmental resistance under bending stress cannot be evaluated.
【０００５】本発明の目的は所定の曲げ応力負荷を維持
した状態で耐環境性を評価できる応力負荷耐環境性評価
法を提供することにある。An object of the present invention is to provide a stress load environment resistance evaluation method capable of evaluating the environment resistance while maintaining a predetermined bending stress load.
【０００６】[0006]
【課題を解決するための手段】本発明の応力負荷耐環境
性評価法は、試料に曲げ応力を負荷する治具と、治具を
内部に収納できる容器をもち且つ容器内雰囲気の温度，
圧力及び組成を調整できる疑似環境再現装置と、治具に
荷重する荷重装置とから成る応力負荷耐環境性評価装置
を用いて、試料に曲げ応力を負荷した状態での耐環境性
を評価する方法である。SUMMARY OF THE INVENTION The present invention provides a method for evaluating the environmental resistance to stress load, which comprises a jig for applying a bending stress to a sample, a container capable of accommodating the jig therein, and the temperature of the atmosphere in the container.
A method for evaluating the environmental resistance in a state where a sample is subjected to bending stress by using a stress load environmental resistance evaluation device including a pseudo environment reproduction device capable of adjusting pressure and composition and a load device for loading a jig. It is.
【０００７】治具は、耐環境性，強度及び靱性に優れた
材料で作製され、荷重装置より治具自体に引張もしくは
圧縮荷重が負荷されると治具に支持された試料に曲げ応
力が負荷される構造であり、且つ複数の試料を支持する
ことができる構造である。The jig is made of a material having excellent environmental resistance, strength and toughness. When a tensile or compressive load is applied to the jig itself from a load device, a bending stress is applied to the sample supported by the jig. This is a structure that can support a plurality of samples.
【０００８】さらに本発明の応力負荷耐環境性評価法
は、治具に形状が異なる複数の試料を同時に支持させる
ことにより、同時に負荷応力の異なる複数の試料を評価
できる方法である。Further, the stress load environment resistance evaluation method of the present invention is a method in which a plurality of samples having different shapes can be simultaneously evaluated by simultaneously supporting a plurality of samples having different shapes on a jig.
【０００９】さらに本発明の応力負荷耐環境性評価法
は、荷重装置により一定荷重を負荷すること、もしくは
予め荷重制御装置にプログラムされた波形の荷重を負荷
することができる、または一定ひずみ量で荷重を負荷す
ること、もしくは予め荷重制御装置にプログラムされた
波形のひずみ量で荷重を負荷することができる。Further, the method for evaluating the environmental resistance to stress under load according to the present invention can apply a constant load by a load device, or can apply a waveform load programmed in advance to a load control device, or a constant strain amount. The load can be applied, or the load can be applied with a waveform distortion amount programmed in advance in the load control device.
【００１０】さらに本発明の応力負荷耐環境性評価法
は、疑似環境再現装置の容器内雰囲気が所定の温度，圧
力及び組成とした空気，水，腐食性ガス，腐食性液体で
ある方法である。Further, the stress load environment resistance evaluation method of the present invention is a method in which the atmosphere in the container of the simulated environment reproduction device is air, water, corrosive gas, or corrosive liquid having a predetermined temperature, pressure and composition. .
【００１１】[0011]
（実施例１）図１に本発明の応力負荷耐環境性評価法で
用いられる応力負荷耐環境性評価装置１の概略図を示
す。応力負荷耐環境性評価装置１は、試料に曲げ応力を
負荷する治具１０と、治具を内部に収納できる容器２１
をもち且つ容器内雰囲気の温度，圧力及び組成を調整で
きる疑似環境再現装置２０と、治具に荷重する荷重装置
３０とから成る。(Embodiment 1) FIG. 1 is a schematic diagram of a stress load environment resistance evaluation apparatus 1 used in the stress load environment resistance evaluation method of the present invention. The stress load environment resistance evaluation apparatus 1 includes a jig 10 for applying a bending stress to a sample, and a container 21 in which the jig can be stored.
A pseudo-environment reproducing device 20 having a temperature, a pressure, and a composition of an atmosphere in a container, and a load device 30 for loading a jig.
【００１２】治具１０を図２に示す。この治具は耐環境
性，強度及び靱性に優れた材料であるＩＮ７１８で作製
され、荷重装置３０よりプルロッド３１１を通じて治具
自体に圧縮荷重が負荷されると治具に支持された板状試
料４０に曲げ応力が負荷される構造であり、且つ複数の
試料を支持することができる構造である。試料は４個の
支持軸１１１で固定され、かつずれ止め１１２及び支持
軸固定部１１３の構造により荷重負荷時に外れない。FIG. 2 shows the jig 10. This jig is made of IN718 which is a material having excellent environmental resistance, strength and toughness. When a compressive load is applied to the jig itself from the load device 30 via the pull rod 311, the plate-like sample 40 supported by the jig is formed. This is a structure in which a bending stress is applied to the sample and a structure capable of supporting a plurality of samples. The sample is fixed by the four support shafts 111 and does not come off when a load is applied due to the structure of the stopper 112 and the support shaft fixing portion 113.
【００１３】試料の部位の内、内側２個の支持軸より中
心側の全部位は、同曲げモーメントをもつので図３に示
すように曲げ応力が等しい。またこれより外側の部位は
外側の支持軸に向かって連続的に曲げ応力が減少してい
る。このように同一試料でも、曲げ応力が同じ領域と連
続的に曲げ応力が変化している領域があり、耐環境性評
価試験後所定の曲げ応力に対する評価だけでなく、所定
より小さい曲げ応力に対する評価もできる。[0013] Of the parts of the sample, all parts on the center side of the two inner support shafts have the same bending moment, and therefore have the same bending stress as shown in FIG. In addition, the bending stress is reduced continuously at the outer portion toward the outer support shaft. Thus, even in the same sample, there is a region where the bending stress is the same and a region where the bending stress is continuously changed, so that not only the evaluation for the predetermined bending stress after the environmental resistance evaluation test but also the evaluation for the bending stress smaller than the predetermined. Can also.
【００１４】また負荷する曲げ応力は板状試料４０の厚
さに関係するので、厚さの異なる試料を治具に同時に固
定することにより、同時に異なる曲げ応力が負荷された
試料の評価ができる。Further, since the bending stress to be applied is related to the thickness of the plate-like sample 40, by simultaneously fixing the samples having different thicknesses to the jig, the samples to which the different bending stresses are simultaneously applied can be evaluated.
【００１５】荷重装置３０は、図１及び図４に示すよう
に防振パッド３１２を敷いて床に据え付けられたベース
３１３と、ベース上に固定されたテーブル３１４と、テ
ーブル３１４上に立てられた支柱３１５と、支柱３１５
に取り付けられたクロスヨーク３１６０と、クロスヨー
ク３１６０を昇降させる昇降ジャッキ３１６１と、昇降
ジャッキ３１６１に伝えられる油圧を制御する昇降マニ
ホールド３１６２と、クロスヨーク３１６０を固定する
クランプジャッキ３１６３及びクランプボルト３１６４
と、クランプジャッキ３１６３に伝えられる油圧を制御
するクランプマニホールド３１６５と、クロスヨーク３
１６０に取り付けられ試験時プルロッド３１１を通じて
ひずみ量を検出するロードセル３１７と、テーブル３１
４に取り付けられプルロッド３１１を通じて治具１０に
荷重を負荷するアクチュエータ３１８と、アクチュエー
タ３１８の出力を制御する制御装置３２とジャッキ316
1，３１６３とアクチュエータ３１８に油圧を供給する
荷重源３３からなる。As shown in FIGS. 1 and 4, the load device 30 has a base 313 mounted on the floor with a vibration isolating pad 312 laid thereon, a table 314 fixed on the base, and an upright table. Prop 315 and post 315
3160, a lifting jack 3161 for raising and lowering the cross yoke 3160, a lifting manifold 3162 for controlling the hydraulic pressure transmitted to the lifting jack 3161, a clamp jack 3163 for fixing the cross yoke 3160, and a clamp bolt 3164.
A clamp manifold 3165 for controlling the hydraulic pressure transmitted to the clamp jack 3163;
A load cell 317 attached to the table 160 for detecting the amount of strain through the pull rod 311 during the test;
4, an actuator 318 for applying a load to the jig 10 through a pull rod 311, a control device 32 for controlling the output of the actuator 318, and a jack 316.
1, 3163 and a load source 33 for supplying hydraulic pressure to the actuator 318.
【００１６】制御装置３２は、一定荷重を負荷する、も
しくは予め荷重制御装置３２にプログラムされた波形の
荷重を負荷するという荷重制御と、一定ひずみ量で荷重
を負荷すること、もしくは予め荷重制御装置３２にプロ
グラムされた波形のひずみ量で荷重を負荷するというひ
ずみ量制御ができる。The control device 32 controls the load by applying a constant load or by applying a load having a waveform programmed in advance to the load control device 32, or by applying a load with a constant strain amount, or Strain amount control in which a load is applied with the waveform strain amount programmed in 32 can be performed.
【００１７】疑似環境再現装置２０は、構成部品を一部
図４内に示すが、荷重装置３０のプルロッド３１１の間
に取り付けられた治具１０全体を内蔵でき且つ外気から
遮断できる容器２１と、容器２１を荷重装置本体３１に
固定する容器固定治具と、温度保持装置２４として容器
全体を加熱できる加熱炉と、加熱炉を荷重装置本体３１
に固定する加熱炉固定治具２４１と、加熱炉に電流を供
給し且つ温度を制御する加熱炉制御装置２５と、加熱炉
制御装置に容器内の温度を伝える温度伝達線と、腐食性
ガスを所定の圧力及び組成にする腐食ガス生成装置２２
０と、腐食ガス生成装置から容器内にガスを送る送気管
と、容器から排ガスを排気する排気管と、排気管より送
られた排ガスを無害化する排ガス処理装置２３０から成
る。疑似環境再現装置２０のフロー図を図５に示す。疑
似環境再現装置２０の腐食性ガス経路、特に送気管，容
器及び排気管は、耐腐食性の高い材料であるSUS310S で
作製した。疑似環境再現装置２０の仕様を表１に示す。The simulated environment reproducing apparatus 20 has a container 21 partially shown in FIG. 4, which can house the entire jig 10 attached between the pull rods 311 of the load device 30 and can be shielded from the outside air. A container fixing jig for fixing the container 21 to the load device main body 31, a heating furnace capable of heating the entire container as the temperature holding device 24, and a heating furnace connected to the load device main body 31;
A heating furnace fixing jig 241 for fixing the heating furnace, a heating furnace control device 25 for supplying a current to the heating furnace and controlling the temperature, a temperature transmission line for transmitting the temperature in the container to the heating furnace control device, and a corrosive gas. Corrosion gas generating device 22 for obtaining predetermined pressure and composition
0, an air supply pipe for sending gas from the corrosive gas generator into the container, an exhaust pipe for exhausting exhaust gas from the container, and an exhaust gas treatment device 230 for detoxifying the exhaust gas sent from the exhaust pipe. FIG. 5 is a flowchart of the virtual environment reproducing apparatus 20. The corrosive gas path of the simulated environment reproducing apparatus 20, especially the air supply pipe, the container and the exhaust pipe were made of SUS310S which is a material having high corrosion resistance. Table 1 shows the specifications of the virtual environment reproduction device 20.
【００１８】[0018]
【表１】 [Table 1]
【００１９】本発明の応力負荷耐環境性評価装置１を用
いて、ガスタービン動翼用Ｎｉ基合金に対し、３００，
５００，７００℃の３温度の常圧水蒸気中で、曲げ応力
490ＭＰａを負荷した時のスケール厚さの経時変化を調
べた結果を図６に示す。Using the stress load environment resistance evaluation apparatus 1 of the present invention, 300,
Bending stress in normal pressure steam at three temperatures of 500 and 700 ° C
FIG. 6 shows the result of examining the change with time of the scale thickness when a load of 490 MPa was applied.
【００２０】（実施例２）実施例１記載の応力負荷耐環
境性評価装置１において、疑似環境再現装置２０は温度
保持装置２４として加熱炉に代えて冷却装置を取り付け
ることができる。冷却装置は、熱交換器にて冷却された
冷媒を容器に張り巡らした冷却管内に流し容器内を冷却
する。本装置を用いれば、低温での耐環境性を評価でき
る。(Embodiment 2) In the stress load environment resistance evaluation apparatus 1 described in Embodiment 1, the pseudo environment reproduction device 20 can be provided with a cooling device as the temperature holding device 24 instead of a heating furnace. The cooling device flows the refrigerant cooled by the heat exchanger into a cooling pipe extending around the container to cool the inside of the container. With this device, the environmental resistance at low temperatures can be evaluated.
【００２１】（実施例３）実施例１記載の応力負荷耐環
境性評価装置１において、試料４０に曲げ荷重を負荷す
る治具１０を実施例１記載の４点支持治具の代わりに図
７に示す３点支持治具を用いることができる。３点支持
治具は、４点支持治具のような広い等曲げ応力域を持た
ないが、中央の支持軸から両端の支持軸に向かって連続
的に曲げ応力が変化しており、応力変化に対する耐環境
性を同試料で観察することができる。またこのような曲
げ応力負荷状態は実機において頻繁にみられるので、応
力負荷耐環境性評価として意味がある。(Embodiment 3) In the stress load environment resistance evaluation apparatus 1 described in Embodiment 1, the jig 10 for applying a bending load to the sample 40 is replaced with the four-point support jig shown in FIG. Can be used. The three-point support jig does not have a wide equal bending stress area like the four-point support jig, but the bending stress changes continuously from the center support shaft to the support shafts at both ends, and the stress change occurs. Can be observed with the same sample. Further, since such a bending stress load state is frequently observed in an actual machine, it is meaningful as a stress load environment resistance evaluation.
【００２２】図７に示す治具は実施例１記載の治具にみ
られるずれ止め１１２を別部品として付けず、図のよう
に本体ブロック１１４を切り込むことにより試料長手方
向に外れることを防いでいる。In the jig shown in FIG. 7, the slip stopper 112 seen in the jig described in the first embodiment is not attached as a separate component, and the jig shown in FIG. I have.
【００２３】（実施例４）実施例１記載の応力負荷耐環
境性評価装置１において、試料４０に曲げ荷重を負荷す
る治具１０は荷重装置３０により圧縮荷重が負荷される
ことにより試料に曲げ応力を負荷する構造であるが、図
８に示す治具は荷重装置３０により引張荷重が負荷され
ることにより試料４０に曲げ応力を負荷する構造であ
る。既存の荷重装置３０は引張荷重を負荷する装置であ
ることが多く、これらの荷重装置に図８に示す治具と疑
似環境再現装置２０を取り付けるだけで応力負荷耐環境
性評価を行うことができる。図９，図１０に定荷重を負
荷できる既存の荷重装置３０１を示す。(Embodiment 4) In the stress load environment resistance evaluation apparatus 1 described in Embodiment 1, the jig 10 for applying a bending load to the sample 40 is bent by applying a compressive load by the load device 30 to the sample. The jig shown in FIG. 8 has a structure in which a tensile load is applied by the load device 30 to apply a bending stress to the sample 40. The existing load devices 30 are often devices for applying a tensile load, and the stress load environment resistance can be evaluated simply by attaching the jig and the pseudo environment reproduction device 20 shown in FIG. 8 to these load devices. . 9 and 10 show an existing load device 301 capable of applying a constant load.
【００２４】図９に示す定荷重装置３０１は、反力受３
１９１を設けることにより治具１０に対して重錘３３１
による荷重を１本のプルロッド３１１を通じて直接負荷
することができる。重錘３３１はベット３１４１内に格
納され、扉３１４２を開閉してその加減を行う。そのた
め外乱による振動を抑えることができる。また温度保持
装置２４を上方に移動して試料の設置が行える構造にな
っている。The constant load device 301 shown in FIG.
By providing the 191, the weight 331 is attached to the jig 10.
Can be directly applied through one pull rod 311. The weight 331 is stored in the bed 3141, and opens and closes the door 3142 to adjust the weight. Therefore, vibration due to disturbance can be suppressed. Further, the structure is such that the sample can be set by moving the temperature holding device 24 upward.
【００２５】図１０に示す定荷重装置３０１は、レバー
３２１を設けることにより、直接荷重の装置より少量の
重錘３３１で治具１０に荷重することができる。By providing the lever 321 in the constant load device 301 shown in FIG. 10, the jig 10 can be loaded on the jig 10 with a smaller weight 331 than a device that directly loads.
【００２６】（実施例５）実施例１及び４記載の応力負
荷耐環境性評価装置１は、大型の荷重装置３０を必要と
する。しかし、図１１に示す構造にすれば、横型管状炉
を温度保持装置２４として用いることができ、簡便な設
備で応力負荷耐環境性評価を行うことができる。(Embodiment 5) The stress load environment resistance evaluation apparatus 1 described in Embodiments 1 and 4 requires a large load device 30. However, with the structure shown in FIG. 11, a horizontal tubular furnace can be used as the temperature holding device 24, and the stress load environment resistance can be evaluated with simple equipment.
【００２７】[0027]
【発明の効果】本発明によれば、温度変化により設定し
た応力が評価試験中変化することなしに、産業用機器を
構成する材料に対して曲げ応力下での耐環境性の評価を
行うことができる。形状の異なる試料を用いれば、同時
に異なる曲げ応力下での耐環境性の評価も行うことがで
きる。According to the present invention, it is possible to evaluate the environmental resistance of a material constituting industrial equipment under bending stress without changing the stress set by the temperature change during the evaluation test. Can be. If samples having different shapes are used, it is possible to simultaneously evaluate environmental resistance under different bending stresses.
【図１】本発明の応力負荷耐環境性評価装置の説明図。FIG. 1 is an explanatory view of a stress load resistance evaluation apparatus of the present invention.
【図２】試料に曲げ応力を負荷する治具の説明図。FIG. 2 is an explanatory view of a jig for applying a bending stress to a sample.
【図３】４点支持治具と支持された試料に負荷される曲
げ応力の説明図。FIG. 3 is an explanatory diagram of a bending stress applied to a four-point support jig and a supported sample.
【図４】荷重装置本体の斜視図。FIG. 4 is a perspective view of a load device main body.
【図５】疑似環境再現装置のフローチャート。FIG. 5 is a flowchart of the virtual environment reproduction apparatus.
【図６】本発明の応力負荷耐環境性評価法で得た結果の
一例を示す説明図。FIG. 6 is an explanatory view showing an example of a result obtained by the stress load environment resistance evaluation method of the present invention.
【図７】３点支持治具と支持された試料に負荷される曲
げ応力の説明図。FIG. 7 is an explanatory diagram of a bending stress applied to a three-point support jig and a supported sample.
【図８】引張荷重によって試料に曲げ応力を負荷する治
具の説明図。FIG. 8 is an explanatory view of a jig for applying a bending stress to a sample by a tensile load.
【図９】定荷重を負荷できる既存の荷重装置例１の平面
図。FIG. 9 is a plan view of an existing load device example 1 capable of applying a constant load.
【図１０】定荷重を負荷できる既存の荷重装置例２の平
面図。FIG. 10 is a plan view of an existing load device example 2 capable of applying a constant load.
【図１１】簡便な設備で応力負荷耐環境性評価を行うこ
とができる構造を示す説明図。FIG. 11 is an explanatory view showing a structure capable of performing stress load resistance evaluation with simple equipment.
１０…試料に曲げ荷重を負荷する治具、１２…プルロッ
ド締め付けねじ、１３…固定棒、１４…固定棒固定ね
じ、１１１…支持軸、１１２…ずれ止め、１１３…支持
軸固定部、１１４…本体ブロック、１５０…治具取り付
け金具、３１１…プルロッド。Reference numeral 10: a jig for applying a bending load to a sample; 12, a pull rod tightening screw; 13, a fixing rod; 14, a fixing rod fixing screw; 111, a support shaft; 112, a stopper; 113, a support shaft fixing portion; Block, 150: jig mounting bracket, 311: pull rod.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中村 重義 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 (72)発明者 土井 裕之 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 (72)発明者 松田 憲昭 茨城県日立市幸町三丁目２番２号 日立ニ ュークリアエンジニアリング株式会社内 (72)発明者 木本 寛 茨城県土浦市神立町502番地 株式会社日 立製作所機械研究所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeyoshi Nakamura 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Inside the Hitachi Research Laboratory, Hitachi, Ltd. (72) Inventor Hiroyuki Doi 7-1-1 Omika-cho, Hitachi City, Ibaraki Prefecture No. 1 Hitachi, Ltd. Hitachi Research Laboratories (72) Inventor Noriaki Matsuda 3-2-2, Sachimachi, Hitachi City, Ibaraki Prefecture Within Hitachi New Clear Engineering Co., Ltd. (72) Inventor Hiroshi Kimoto Tsuchiura, Ibaraki Prefecture 502, Tatechi-cho, Ichichi, Japan
Claims (6)
具を内部に収納できる容器をもち前記容器内雰囲気の温
度，圧力及び組成を調整できる疑似環境再現装置と、前
記治具に荷重する荷重装置とから成る応力負荷耐環境性
評価装置を用いて、試料に曲げ応力を負荷した状態での
耐環境性を評価することを特徴とする応力負荷耐環境性
評価法。1. A jig for applying a bending stress to a sample, a pseudo-environment reproducing device having a container capable of accommodating the jig therein and capable of adjusting the temperature, pressure and composition of the atmosphere in the container. A stress load environmental resistance evaluation method characterized by evaluating the environmental resistance of a sample in a state where a bending stress is applied, using a stress load environmental resistance evaluation device including a load device for applying a load.
強度及び靱性に優れた材料で作製され、前記荷重装置よ
り治具自体に引張もしくは圧縮荷重が負荷されると治具
に支持された試料に曲げ応力が負荷される構造であり、
複数の試料を支持することができる構造である応力負荷
耐環境性評価法。2. The jig according to claim 1, wherein the jig has environmental resistance,
Made of a material having excellent strength and toughness, a structure in which bending stress is applied to a sample supported by the jig when a tensile or compressive load is applied to the jig itself from the load device,
Stress load environmental resistance evaluation method, which is a structure that can support multiple samples.
複数の試料を同時に支持させることにより、同時に負荷
応力の異なる複数の試料を評価する応力負荷耐環境性評
価法。3. A stress load environment resistance evaluation method for simultaneously evaluating a plurality of samples having different load stresses by simultaneously supporting a plurality of samples having different shapes on the jig according to claim 1.
重を負荷すること、もしくは予め荷重制御装置にプログ
ラムされた波形の荷重を負荷する応力負荷耐環境性評価
法。4. A method for evaluating a stress load environment in which the load device according to claim 1 applies a constant load or applies a load having a waveform programmed in advance to a load control device.
ずみ量で荷重を負荷すること、もしくは予め荷重制御装
置にプログラムされた波形のひずみ量で荷重を負荷する
応力負荷耐環境性評価法。5. The load-loading device according to claim 1, wherein a load is applied with a constant strain amount, or a stress-loading environment resistance evaluation in which a load is applied with a waveform strain amount programmed in a load control device in advance. Law.
容器内雰囲気は、所定の温度，圧力及び組成である空
気，水，腐食性ガス，腐食性液体である応力負荷耐環境
性評価法。6. An evaluation of stress load environment resistance in which the atmosphere in the container of the simulated environment reproducing apparatus according to claim 1 is air, water, corrosive gas or corrosive liquid having a predetermined temperature, pressure and composition. Law.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34494396A JPH10185798A (en) | 1996-12-25 | 1996-12-25 | Stress-load environment-resistant-property evaluation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34494396A JPH10185798A (en) | 1996-12-25 | 1996-12-25 | Stress-load environment-resistant-property evaluation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10185798A true JPH10185798A (en) | 1998-07-14 |
Family
ID=18373210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34494396A Pending JPH10185798A (en) | 1996-12-25 | 1996-12-25 | Stress-load environment-resistant-property evaluation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10185798A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010131519A1 (en) | 2009-05-12 | 2010-11-18 | 三菱重工業株式会社 | Method and apparatus for simulation test of centrifugal stress of turbine blade |
| US8513020B2 (en) * | 2009-12-08 | 2013-08-20 | National Oilwell Varco, L.P. | Corrosion testing apparatus and methods |
| CN104458400A (en) * | 2014-12-10 | 2015-03-25 | 北京科技大学 | High-temperature and high-pressure water vapor environment structural material testing device |
| CN105424501A (en) * | 2015-12-23 | 2016-03-23 | 北汽福田汽车股份有限公司 | Rigidity evaluation method and rigidity evaluation device of crane chassis |
| CN106323850A (en) * | 2016-08-15 | 2017-01-11 | 中国石油天然气集团公司 | Device and method for evaluating corrosion resistance of inner coating of drill pipe |
-
1996
- 1996-12-25 JP JP34494396A patent/JPH10185798A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010131519A1 (en) | 2009-05-12 | 2010-11-18 | 三菱重工業株式会社 | Method and apparatus for simulation test of centrifugal stress of turbine blade |
| US8513020B2 (en) * | 2009-12-08 | 2013-08-20 | National Oilwell Varco, L.P. | Corrosion testing apparatus and methods |
| CN104458400A (en) * | 2014-12-10 | 2015-03-25 | 北京科技大学 | High-temperature and high-pressure water vapor environment structural material testing device |
| CN105424501A (en) * | 2015-12-23 | 2016-03-23 | 北汽福田汽车股份有限公司 | Rigidity evaluation method and rigidity evaluation device of crane chassis |
| CN105424501B (en) * | 2015-12-23 | 2018-01-19 | 北汽福田汽车股份有限公司 | Crane chassis rigidity assessment method and device |
| CN106323850A (en) * | 2016-08-15 | 2017-01-11 | 中国石油天然气集团公司 | Device and method for evaluating corrosion resistance of inner coating of drill pipe |
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