SU659933A1 - Method of compression testing of reinforced plastics - Google Patents
Method of compression testing of reinforced plasticsInfo
- Publication number
- SU659933A1 SU659933A1 SU772540089A SU2540089A SU659933A1 SU 659933 A1 SU659933 A1 SU 659933A1 SU 772540089 A SU772540089 A SU 772540089A SU 2540089 A SU2540089 A SU 2540089A SU 659933 A1 SU659933 A1 SU 659933A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- reinforced plastics
- sample
- supports
- force
- compression
- Prior art date
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
1one
Изобретение отноеитс к области механических испытаний материалов на прочность , в частности к способам испытани армированных пластиков на сжатие.The invention relates to the field of mechanical testing of materials for strength, in particular to methods for testing reinforced plastics in compression.
Известен способ испытани армированных пластиков на сжатие, заключающийс в том, что образец нагружают по торцам усилием, направленным параллельно сло м арматуры, и по усилию разрушени суд т о прочности пластика 1.A known method for testing reinforced plastics in compression, is that the sample is loaded at the ends with a force directed parallel to the reinforcement layers, and by the force of failure it is judged about the strength of the plastic 1.
Недостатком этого способа вл етс низка точность определени разрушающего на-нр жени из-за преждевременного разрушени образца вследствие потери устойчивости наружных армирующих слоев материала образца.The disadvantage of this method is the low accuracy of determining the destructive level due to the premature destruction of the sample due to the loss of stability of the outer reinforcing layers of the sample material.
Цель изобретени - повышение точности определени разрушающего напр жени .The purpose of the invention is to improve the accuracy of determining the breaking stress.
Иоставленна цель достигаетс тем, что нагрузку Прикладывают через опоры с цилиндрической нагружающей поверхностью, размещают опоры таким образом, чтобы образующа их цилиндрической поверхности была направлена вдоль армирующих слоев, а радиус кривизны опоры выбирар ют из соотношени - 20-25, где а -The goal is achieved by applying a load through the supports with a cylindrical loading surface, the supports are positioned so that the cylindrical surfaces forming them are directed along the reinforcing layers, and the support curvature radius is selected from the ratio of 20-25, where a -
аbut
ширина образца.sample width.
22
На чертеже изображено устройство дЛ осуществлени способа.The drawing shows a device for performing the method.
стройство содержит две самоустанавливающиес опоры 1 и 2 с цилиндрическойThe device contains two self-aligning supports 1 and 2 with a cylindrical
нагружающей поверхностью 3.loading surface 3.
Способ осуществл етс следующим образом .The method is carried out as follows.
Образец 4 размещают между опорами 1 и 2 таким образом, чтобы образующа ЦИлиндрической поверхнос1И 3 опор была направлена вдоль армирующих слоев образца 4, и прикладывают к образцу сн имающую нагрузку Р через опоры. Благодар такому способу, нагрузка, действующа наSample 4 is placed between the supports 1 and 2 so that the forming Cylindrical surface of the 1 3 supports is directed along the reinforcing layers of sample 4, and a lifting load P is applied to the sample through the supports. Thanks to this method, the load acting on
наружные армирующие слои материала образца, меньше, чем в его средней части, что позвол ет исключить разрушение этих слоев от потери устойчивости до возникновени разрущени от сжати в основномthe outer reinforcing layers of the sample material, less than in its middle part, which eliminates the destruction of these layers from buckling to the occurrence of collapse of compression mainly
материале образца. Выбранный радиус R кривизны опоры по отнощению к щирине а образца способствует созданию минимальной неравномерности распределени нагрузки и соответственно контактных напр жений по торцам образца.sample material. The selected radius R of the support curvature with respect to the specimen width a also contributes to the creation of a minimum uneven distribution of the load and, accordingly, contact stresses along the ends of the specimen.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772540089A SU659933A1 (en) | 1977-11-04 | 1977-11-04 | Method of compression testing of reinforced plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772540089A SU659933A1 (en) | 1977-11-04 | 1977-11-04 | Method of compression testing of reinforced plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU659933A1 true SU659933A1 (en) | 1979-04-30 |
Family
ID=20731550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772540089A SU659933A1 (en) | 1977-11-04 | 1977-11-04 | Method of compression testing of reinforced plastics |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU659933A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989003989A1 (en) * | 1987-10-21 | 1989-05-05 | The Expert System Technologies, Inc. | Method of establishing standard composite material properties |
-
1977
- 1977-11-04 SU SU772540089A patent/SU659933A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989003989A1 (en) * | 1987-10-21 | 1989-05-05 | The Expert System Technologies, Inc. | Method of establishing standard composite material properties |
| US4856335A (en) * | 1987-10-21 | 1989-08-15 | The Expert System Technologies, Inc. | Method of establishing standard composite material properties |
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