DE200853C - - Google Patents

Info

Publication number
DE200853C
DE200853C DENDAT200853D DE200853DA DE200853C DE 200853 C DE200853 C DE 200853C DE NDAT200853 D DENDAT200853 D DE NDAT200853D DE 200853D A DE200853D A DE 200853DA DE 200853 C DE200853 C DE 200853C
Authority
DE
Germany
Prior art keywords
tested
rollers
testing
clamps
fixed clamping
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.)
Active
Application number
DENDAT200853D
Other languages
German (de)
Publication of DE200853C publication Critical patent/DE200853C/de
Active 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
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0278—Thin specimens
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0278—Thin specimens
    • G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0278—Thin specimens
    • G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes

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)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die Untersuchung stark elastischer Stoffe auf Dehnung bei bestimmter Belastung bereitet nach dem üblichen Untersuchungsverfahren Schwierigkeiten, weil die aus dem Material geformten, zwischen sich entfernende Klemmen eingespannten Streifen beim Auseinanderbewegen der Klemmen in ihrer vollen Länge die Querschnittsform verändern, so daß sie bei Überschreitung einer bestimmtenThe investigation of highly elastic fabrics for elongation under certain loads prepares them according to the usual method of investigation, difficulties because the molded from the material, between them Clamps clamped strips when moving apart the clamps in their full Length change the cross-sectional shape, so that when it exceeds a certain

ίο Grenze aus den Klemmen herausschlüpfen. Werden dagegen die Klemmen allzu stark angespannt, so tritt wieder ein Zerquetschen des Materials ein.ίο Slip border out of the clamps. If, on the other hand, the clamps are tightened too much, they will be crushed again of the material.

Nach vorliegender Erfindung erfolgt die Untersuchung derartiger Stoffe in der Weise, daß aus dem zu prüfenden Material ein endloses Band geformt wird, das nun an Stelle der festen Einspannung über sich entfernende Zapfen zu stecken ist. Handelt es sich beispielsweise um die Untersuchung von Gummi, so kann aus der Platte α (Fig. 1) ein ring- oder schleifenförmiger Körper b1 ausgestanzt werden, der in allen Teilen den gleichen Querschnitt besitzt und nun einfach über entsprechende Dorne oder Rollen h (Fig. 2) zu legen ist. Werden jetzt die Rollen h auseinanderbewegt und dadurch der Prüfungskörper bl gedehnt, so teilt sich die Zug beanspruchung beiden Schenkeln des Prüfungskörpers gleichmäßig mit und es kann die Prüfung bis zum Eintritt des Reißens fortgesetzt werden.According to the present invention, the investigation of such substances is carried out in such a way that an endless band is formed from the material to be tested, which is now to be stuck over moving pins in place of the fixed clamping. If, for example, the examination of rubber is concerned, a ring-shaped or loop-shaped body b 1 can be punched out of the plate α (Fig. 1), which has the same cross-section in all parts and is now simply fitted with appropriate mandrels or rollers h ( Fig. 2) is to be laid. If the rollers h are now moved apart, thereby stretching the test specimen b l , the tensile stress is shared equally between both legs of the test specimen and the test can be continued until it tears.

Es empfiehlt sich, an Stelle feststehender Dorne zum Einhängen des Prüfungskörpers drehbare Rollen anzuwenden, durch die bei etwaiger ungleicher Dehnung beider Schenkel des zu prüfenden Körpers sich durch entsprechende Drehung ein Ausgleich in der Beanspruchung ganz von selbst vollzieht.It is advisable to hang the test specimen in place of fixed spikes use rotatable rollers, through which, in the event of unequal stretching of both legs of the body to be tested is compensated for in the stress by corresponding rotation takes place all by itself.

Claims (2)

Patent-Ansprüche:Patent Claims: 1. Verfahren zum Prüfen stark elastischer Körper auf Dehnung bei bestimmter Belastung, dadurch gekennzeichnet, daß das zu prüfende Material zu einem in sich geschlossenen endlosen Band geformt wird und statt fester Einspannung über sich entfernende Zapfen gesteckt wird.1. Procedure for testing highly elastic bodies for elongation at certain Load, characterized in that the material to be tested becomes one in itself closed endless belt is formed and instead of fixed clamping is pushed over removing pins. 2. Vorrichtung zur Ausführung des im Anspruch 1 bezeichneten Verfahrens, dadurch gekennzeichnet, daß die zum Halten des zu prüfenden Körpers (b1) dienenden Teile des Prüfungsapparates mit Rollen (h) zum Einhängen des Prüfungskörpers •versehen sind.2. Apparatus for carrying out the method described in claim 1, characterized in that the parts of the testing apparatus serving to hold the body to be tested (b 1 ) are provided with rollers (h) for hanging the test body. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT200853D Active DE200853C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200853T

Publications (1)

Publication Number Publication Date
DE200853C true DE200853C (en)

Family

ID=5763216

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT200853D Active DE200853C (en)

Country Status (2)

Country Link
DE (1) DE200853C (en)
FR (2) FR385620A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131035B (en) * 1955-03-01 1962-06-07 Behn Verpackung Erwin Device for testing paper and similar materials

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8502654A (en) * 1985-09-27 1987-04-16 Dunlop Enerka Bv METHOD AND APPARATUS FOR TESTING CLOSED LOOP MATERIAL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131035B (en) * 1955-03-01 1962-06-07 Behn Verpackung Erwin Device for testing paper and similar materials

Also Published As

Publication number Publication date
FR13542E (en) 1911-04-29
FR385620A (en)

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