DE715261C - Clamping device for test specimens made of rubber - Google Patents

Clamping device for test specimens made of rubber

Info

Publication number
DE715261C
DE715261C DEC52734D DEC0052734D DE715261C DE 715261 C DE715261 C DE 715261C DE C52734 D DEC52734 D DE C52734D DE C0052734 D DEC0052734 D DE C0052734D DE 715261 C DE715261 C DE 715261C
Authority
DE
Germany
Prior art keywords
rubber
clamping device
test specimens
metal
specimens made
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.)
Expired
Application number
DEC52734D
Other languages
German (de)
Inventor
Dr-Ing Bernhard Steinborn
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.)
Continental AG
Original Assignee
Continental Gummi Werke AG
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 Continental Gummi Werke AG filed Critical Continental Gummi Werke AG
Priority to DEC52734D priority Critical patent/DE715261C/en
Application granted granted Critical
Publication of DE715261C publication Critical patent/DE715261C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/04—Chucks

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Description

Einspannvorrichtung für Probekörper aus Gummi Wenn man einen Probekörper aus Gummi in der üblichen Weise einspannt und an ihm die bei wechselnden Beanspruchungen auftretende Dämpfung mißt, erhält man Ergehnisse, die wesentlich von der Art der Einspannung in der Prüfmas chine abhängen.Clamping device for rubber test specimens When placing a test specimen made of rubber clamped in the usual way and on it with changing loads Measures occurring attenuation, one obtains results that essentially depend on the type of The clamping in the testing machine.

In der Einspannvorrichtung treten mehr oder weniger große relative Bewegungen des Gummikörpers zu den Einspannbacken auf, die mit Reibung verbunden sind und deshalb eine zusätzliche Dämpfung liefern. Die Dämpfung des Gummis wird auf diese Weise zu groß gemessen, und zwar hängt die Größe des Fehlers von der zufälligen Art der Einspannung ab.In the jig occur more or less large relative Movements of the rubber body to the clamping jaws associated with friction and therefore provide additional cushioning. The cushioning of the rubber will measured in this way too large, namely the size of the error depends on the random Type of restraint.

Dieser Nachteil wird durch die Einspannung nach der Erfindung beseitigt. Sie besteht darin, daß Gummikörper mit auf den Endflächen aufvulkanisierten Metallstücken als Probekörper verwendet und in die Materialprüfvorrichtung so eingespannt werden, daß von der Eins,pansvorrichtung nur die Metallstücke erfaßt werden. Den wechselnden Bewegungen der Metallstücke gegeneineinander muß dann der aufvulkanisierte Gummikörper folgen. Er führt wechselnde Formänderungen aus, die bei hochelastischen Gummisorten mit verhältnismäßig geringer, blei weniger hochelastischen Sorten mit größerer Dämpfung verbunden sind. Die Verbindung des Gummikörpers mit den Metallstücken durch Aufvulkanisieren muß derart sein, daß keine relativen Bewegungen an der Berührungsfläche zwischen Gummi und Metallstück auftreten, die das Ergebnis der Dämpfungsmessung verfälschen würden. This disadvantage is eliminated by the clamping according to the invention. It consists in the rubber body with metal pieces vulcanized onto the end faces used as test specimen and clamped in the material testing device in such a way that that only the pieces of metal are detected by the one, pansvorrichtung. The changing The vulcanized rubber body must then move the metal pieces against one another follow. He carries out changing shape changes, which are the case with highly elastic types of rubber with relatively less, lead less highly elastic types with greater damping are connected. The connection of the rubber body with the metal pieces by vulcanization must be such that no relative movements at the interface between Rubber and metal piece occur which is the result of the attenuation measurement would falsify.

Wenn die beiden Metallstücke relative Bewegungen gegeneinander ausführen, wird ein Teil der hineingesteckten Energie in Wärme umgesetzt. Diese Wärme kann in an sich bekannter Weise, z. B. durch Thermoelemente, bestimmt werden. Aus der Erwärmung, die je Schwingung auftritt, ergibt sich die Größe der Dämpfung. When the two pieces of metal move relative to each other, some of the energy put in is converted into heat. This warmth can in a manner known per se, for. B. by thermocouples. From the The amount of the damping results from the heating that occurs per oscillation.

Claims (1)

P A T E N T A N S P R U C H : Die Verwendung von Gummikörpern mit auf den Endflächen aufvulkanisierten Metallstücken als Probekörper in Materialprüfungvorrichtungen, die eine wechselnde Beanspruchung des Prüflings zulassen, in der Weise, daß von der Einspannvorrichtung der Prüfmaschine nur die Metallstücke erfaßt werden. P A T E N T A N S P R U C H: The use of rubber bodies with Metal pieces vulcanized onto the end faces as test specimens in material testing devices, which allow alternating stresses on the test object in such a way that of the clamping device of the testing machine only detects the pieces of metal.
DEC52734D 1937-04-23 1937-04-23 Clamping device for test specimens made of rubber Expired DE715261C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC52734D DE715261C (en) 1937-04-23 1937-04-23 Clamping device for test specimens made of rubber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC52734D DE715261C (en) 1937-04-23 1937-04-23 Clamping device for test specimens made of rubber

Publications (1)

Publication Number Publication Date
DE715261C true DE715261C (en) 1941-12-18

Family

ID=7027643

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC52734D Expired DE715261C (en) 1937-04-23 1937-04-23 Clamping device for test specimens made of rubber

Country Status (1)

Country Link
DE (1) DE715261C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153929A (en) * 1962-06-22 1964-10-27 Thiokol Chemical Corp Elastomeric test specimen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153929A (en) * 1962-06-22 1964-10-27 Thiokol Chemical Corp Elastomeric test specimen

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