SU890132A1 - Material specimen creeping characteristic determination method - Google Patents

Material specimen creeping characteristic determination method Download PDF

Info

Publication number
SU890132A1
SU890132A1 SU802883044A SU2883044A SU890132A1 SU 890132 A1 SU890132 A1 SU 890132A1 SU 802883044 A SU802883044 A SU 802883044A SU 2883044 A SU2883044 A SU 2883044A SU 890132 A1 SU890132 A1 SU 890132A1
Authority
SU
USSR - Soviet Union
Prior art keywords
sample
creep
compression
tests
stress
Prior art date
Application number
SU802883044A
Other languages
Russian (ru)
Inventor
Ольга Анатольевна Одинокова
Юрий Михайлович Даниловский
Original Assignee
Хабаровский политехнический институт
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 Хабаровский политехнический институт filed Critical Хабаровский политехнический институт
Priority to SU802883044A priority Critical patent/SU890132A1/en
Application granted granted Critical
Publication of SU890132A1 publication Critical patent/SU890132A1/en

Links

Description

Изобретение относитс  к испытательной технике, в частности к способам определени  характеристик ползучести . Известен способ определени  характеристик ползучести образцов материалов , заключающийс  в том, что образец раст гивают при различных уровн х посто нного напр жени  и стро т диаграмму деформировани  , по которой суд т о характеристиках ползучести м териала образца 1 i . Недостатком способе  вл етс  мала  информаци , получаема  при испытании , т.е. невозможно получить характеристики ползучести при сжатии на том же образце. Цель изобретений - увеличение объема информации.. Указанна  цель достигаетс  тем,чт испытани  на раст жение чередуют с t испытани ми на сжатие при тех же : уровн х напр жений с вьщержкой образца между испытани ми без нагрузки в течение заданного времени, а о харак теристиках ползучести при раст жении и сжатии суд т соответственно по вто рой точке перегиба и по точке максимума на диаграмме отношение деформаций раст жени  и сжати  - напр жение Способ осуществл етс  следующим образом. Образец испытывают на раст жение и на сжатие, исключив возможность потерн устойчивости при сжатии при посто нной температуре и посто нном уровне напр жени . С целью восстановлени  исходной структуры материала проводитс  вьщержка образца между испытани ми без нагрузки в течение заданного времени. Затем испытани  на раст жение и сжатие повтор ютс  при более высоком значении напр жений . По полученным данным стро т диагpat/му отношение деформации раст жени  (Ер) к деформации сжати  ( - напр жение . О характеристиках ползучести при раст жении и сжатии суд т соответственно по второй точке перегиба и по точке максимума на этой диаг-рамме . Способ определени  .характеристик ползучести образцов материалов позвол ет при испытании одного образца получи- ь характеристики ползучести . как при раст жении, так и при сжатии .The invention relates to a testing technique, in particular to methods for determining creep characteristics. A known method for determining the creep characteristics of samples of materials is that the sample is stretched at different levels of constant stress and a deformation diagram is constructed, which is used to judge the creep characteristics of the material of sample 1 i. The disadvantage of the method is the small information obtained during the test, i.e. It is not possible to obtain creep characteristics under compression on the same specimen. The purpose of the inventions is to increase the amount of information. This goal is achieved by alternating tensile tests with t compressive tests under the same: stress levels with specimen discharge between tests without load for a specified time, and about characteristics creep in tension and compression is judged by the second inflection point and by the maximum point on the diagram the ratio of the deformations of the tension and compression - the stress. The method is carried out as follows. The specimen is tested for stretching and compression, eliminating the possibility of loss of stability during compression at a constant temperature and constant stress level. In order to restore the initial structure of the material, the sample is held between tests without load for a specified time. The tensile and compression tests are then repeated at a higher stress value. According to the data obtained, the ratio of tensile strain (Ep) to compressive strain (- stress. The creep characteristics of tensile and compression are judged by the second inflection point and the maximum point on this diagram. The method of determining The creep characteristics of material samples allow one to obtain creep characteristics when testing a single sample, both in tension and in compression.

3 . 89013243 8901324

Claims (1)

Формула изобретени кой образца между испытани ми без наСпособ определени  характеристикгрузки в течение згщанного времени,The claims of the sample between tests without the method of determining the characteristics of the load for a zschennogo time ползучести образцов материалов, за-а о характеристиках ползучести приcreep specimens of materials, for-about creep characteristics at ключанмцийс  в том, что образец раст -раст жении и сжатии суд т соответстгивают при различных уровн х посто н-венно по второй точке перегиба и поthe key is that the sample is stretched and compressed suited to match at various levels, constantly over the second inflection point and ного напр51жени  и стро т диаграммуе точке максимума на диаграмме отнодеформировани , по которой суд т ошение деформаций раст жени  и сжати характеристиках ползучести материа-напр жение, ла образца, отличающийс stress and plot the maximum point on the deformation diagram, which is the trial of deformations of tension and compression of creep characteristics of the material stress, a sample that is different тем; что, с целью увеличени  объемаИсточники информации,topics; that, in order to increase the volume of information sources, информации, испытани  на раст жение.Q прин тые во внимание при экспертизеinformation, tensile test.Q taken into account in the examination чередуют с. испытани ми на сжатие при1. Метод испытани  на ползучесть.alternate with. compression tests Creep test method. тех же уровн х напр жений с выдерж-ГОСТ 3248-60 (прототип).the same voltage levels with soak-GOST 3248-60 (prototype). : v: v : :
SU802883044A 1980-02-11 1980-02-11 Material specimen creeping characteristic determination method SU890132A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU802883044A SU890132A1 (en) 1980-02-11 1980-02-11 Material specimen creeping characteristic determination method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU802883044A SU890132A1 (en) 1980-02-11 1980-02-11 Material specimen creeping characteristic determination method

Publications (1)

Publication Number Publication Date
SU890132A1 true SU890132A1 (en) 1981-12-15

Family

ID=20877961

Family Applications (1)

Application Number Title Priority Date Filing Date
SU802883044A SU890132A1 (en) 1980-02-11 1980-02-11 Material specimen creeping characteristic determination method

Country Status (1)

Country Link
SU (1) SU890132A1 (en)

Similar Documents

Publication Publication Date Title
SU890132A1 (en) Material specimen creeping characteristic determination method
Ross et al. Comparison of several nondestructive evaluation techniques for assessing stiffness and MOE of small-diameter logs
SU1046652A1 (en) Material strength determination method
SU1142768A1 (en) Method of determination of article material susceptibility to damage under cyclic loading
SU1392441A1 (en) Method of determining fatigue limit of material samples
SU1525533A1 (en) Method of determining elastoviscoplastic characteristics of metal materials in static loading
SU1425327A1 (en) Method of determining strain in rock mass
SU1714420A1 (en) Method of determining life strength of polymer materials
SU1033920A1 (en) Material fatigue damage degree determination method
SU1392430A1 (en) Method of determining ultimate point of material crack resistance
SU1589115A1 (en) Method of determining tensile strength of materials
SU1262330A1 (en) Method for investigating viscoelastic characteristics of materials
SU800807A1 (en) Method of investigating
RU2084862C1 (en) Method of material wear test
SU587362A1 (en) Method of determining fracture toughness of construction materials
SU1733957A1 (en) Method of testing material samples for creeping
SU1293548A1 (en) Method of determining fatigue resistance of materials
SU1647356A1 (en) Method for determining expected life of a product of brittle material
SU1019272A1 (en) Method of placing specimens in clamps in extension testing
Benham Correlation between uniaxial and shear creep of thermoplastics
SU905716A1 (en) Method of determination of material elasticity limit
SU853480A1 (en) Method of determination of fatigue strength anisotropy of composite materials
SU1099234A1 (en) Method of determination of part fatigue damage
SU1665278A1 (en) Method of testing endurance limit of materials
RU1798656C (en) Method of determination of maximum permitted size of microdefects in metals under cyclic loading