SU879373A1 - Method of specimen mechanical testing for strength - Google Patents
Method of specimen mechanical testing for strength Download PDFInfo
- Publication number
- SU879373A1 SU879373A1 SU802888316A SU2888316A SU879373A1 SU 879373 A1 SU879373 A1 SU 879373A1 SU 802888316 A SU802888316 A SU 802888316A SU 2888316 A SU2888316 A SU 2888316A SU 879373 A1 SU879373 A1 SU 879373A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- strength
- sample
- mechanical testing
- acoustic emission
- specimen mechanical
- Prior art date
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
Изобретение относитс к испытательной технике к может быть использовано при испытани х образцов на прочность при различных видах нагруз ки. Известен способ механических испытаний образцов на прочность, заключающийс в том, что образец нагружают в испытательной установке и измер ют параметры акустической эмис сии, по которым суд т о Прочности 1 Недостатком способа вл етс низка точность измерени параметров акустической эмиссии от рабочей части образца из-за вли ни шумОв от испытательной установки. Цель изобретени - повышение точности измерени путем исключени вли ни сигналов акустической эмиссии от испытательной установки. Дл достижени указанной цели используют шунты, которые устанавливают на рабочей части образца, и перед испытанием нагружают образец с шунтами в той же установке усилием, прё вышающим усилие разрушени образца. На фиг. 1 изображена схема нагружени образца с шунтами раст жением; на фиг. 2 - то же, сжатием; на фиг.З то же, изгибом. Способ осуществл ют следукицим образом . Образец 1 устанавливают в захватах 2 испытательной установки. Закрепл ют на нем съемные шунты 3 и производ т нагружение зашунтированного образца Р,. превышающим усилие разрушени образца. Затем.разгружают зашунтированный образец, снимают шунты и испытывают образец на прочность, измер параметры акустической эмиссии. Вследствие существовани эффекта Кайзера параметры акустической эмиссии от испытательной установки не будутвли ть на измерение параметров акустической эмиссии от рабочей части образца. Предлагаемый способ позвол ет с большой точностью измер ть параметры акустической эмиссии от рабочей части деформируемого образца, а также использоватб захйаты, широко примен емые- в существующих установках дл испытани механических свойств материалов , что упрощает конструкцию испытательных машин дл исследовани физико-механических свойств материалов с помощью измерени параметров акустической эмиссии.The invention relates to a test technique that can be used in testing samples for strength under various types of load. The known method of mechanical testing of samples for strength is that the sample is loaded in a test facility and acoustic emission parameters are measured by which Strength 1 is judged. The disadvantage of this method is the low accuracy of measurement of acoustic emission parameters from the working part of the sample due to The effect of noise from the test setup. The purpose of the invention is to improve the measurement accuracy by eliminating the influence of acoustic emission signals from the test apparatus. To achieve this goal, shunts are used, which are mounted on the working part of the sample, and before testing they load the sample with shunts in the same installation with an effort that prevents the destruction of the sample. FIG. Figure 1 shows a sample loading circuit with tensile shunts; in fig. 2 - the same, compression; on fig.Z same, bend. The method is carried out in the following way. Sample 1 is installed in the grippers 2 of the test setup. Removable shunts 3 are attached to it and the shunting specimen P, is loaded. exceeding the failure force of the sample. Then unloaded the shunted sample, remove the shunts and test the sample for strength, measuring the parameters of acoustic emission. Due to the existence of the Kaiser effect, the acoustic emission parameters from the test setup will not affect the measurement of acoustic emission parameters from the working portion of the sample. The proposed method allows accurate measurement of the acoustic emission parameters from the working part of the deformable sample, as well as using zyaty, widely used in existing installations for testing the mechanical properties of materials, which simplifies the design of testing machines for studying the physicomechanical properties of materials measurements of acoustic emission parameters.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802888316A SU879373A1 (en) | 1980-02-27 | 1980-02-27 | Method of specimen mechanical testing for strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802888316A SU879373A1 (en) | 1980-02-27 | 1980-02-27 | Method of specimen mechanical testing for strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU879373A1 true SU879373A1 (en) | 1981-11-07 |
Family
ID=20880243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802888316A SU879373A1 (en) | 1980-02-27 | 1980-02-27 | Method of specimen mechanical testing for strength |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU879373A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4918993A (en) * | 1986-08-21 | 1990-04-24 | Hughson David R | Method of gauging pre-existing in-situ stress from an extracted sample |
-
1980
- 1980-02-27 SU SU802888316A patent/SU879373A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4918993A (en) * | 1986-08-21 | 1990-04-24 | Hughson David R | Method of gauging pre-existing in-situ stress from an extracted sample |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5309377A (en) | Calibration apparatus and method for improving the accuracy of tire uniformity measurements and tire testing method using same | |
| US5842373A (en) | Single fiber testing device | |
| SU879373A1 (en) | Method of specimen mechanical testing for strength | |
| SU1545142A1 (en) | Apparatus for determining stressed-strained state of specimen in eccentric compression | |
| SU1163199A1 (en) | Method of determining longevity of member | |
| SU1370538A1 (en) | Method of measuring parameters of cracks in ferromagnetic objects in fatigue tests | |
| SU890110A1 (en) | Rolling-contact bearing diagnostic method | |
| SU1523991A1 (en) | Method of checking quality of articles | |
| SU894433A1 (en) | Method of material veild strength flow determination | |
| SU1682833A1 (en) | Method of determining residual and actual stresses of elastically plastic bending in rectangular cross-section beam samples | |
| SU731324A1 (en) | Method of measuring stresses in steel structure elements | |
| SU1651151A1 (en) | Method for determining expected life of structure | |
| SU868556A1 (en) | Method of determining fatigue durability of ferromagnetic materials | |
| SU1422104A1 (en) | Method of determining limit of durable strength of rocks | |
| SU1035462A1 (en) | Method for determination of heat generation in material | |
| RU2009479C1 (en) | Non-destructive control method | |
| SU932200A1 (en) | Device for determination of normal stresses in interference fit connections | |
| SU1744620A1 (en) | Method of calibration of electropotential flaw detector | |
| SU983501A1 (en) | Method of material extension testing | |
| SU1185201A1 (en) | Method of determining the level of variable stresses which caused destruction of metal parts | |
| SU1411659A1 (en) | Method and apparatus for determining defective articles | |
| SU970186A1 (en) | Structure material destruction toughness determination method | |
| SU1486871A1 (en) | Method of fatigue testing specimens | |
| SU669262A1 (en) | Method of determining residual stresses in specimen section surface layer at cyclic alternating bending | |
| RU1736252C (en) | Method of determination of density of nap coating |