GB493268A - Improvements in or relating to machines for the fatigue testing of materials by bending - Google Patents

Improvements in or relating to machines for the fatigue testing of materials by bending

Info

Publication number
GB493268A
GB493268A GB11130/38A GB1113038A GB493268A GB 493268 A GB493268 A GB 493268A GB 11130/38 A GB11130/38 A GB 11130/38A GB 1113038 A GB1113038 A GB 1113038A GB 493268 A GB493268 A GB 493268A
Authority
GB
United Kingdom
Prior art keywords
specimen
bar
lever
secured
test piece
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
GB11130/38A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB493268A publication Critical patent/GB493268A/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
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
    • 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
    • G01N2203/0014—Type of force applied
    • G01N2203/0023—Bending

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)

Abstract

493,268. Testing fatigue of materials. BOSCH GES., R., (formerly BOSCH AKT.- GES., R.). April 12, 1938, No. 11130. Convention date, April 12, 1937. [Class 106 (ii)] In a mchine for testing by reciprocating bending, one end of the test piece is secured to the free end of an oscillating lever of which the axis crosses the axis of the unloaded test piece at right-angles while the other end of the test piece is secured to the free ends of two parallel plate springs. A bar 6 supported at the ends by plate springs 5 is reciprocated by a connecting rod 7 from a pulley 18 driven by a motor 3. One end of the rod 7 is hinged to the bar and the other is adjustable in a slot across the pulley to vary the stroke of the bar 6. The motor is also adjustable bodily. An element 10 is secured to a rail 2 by a clamp 8 and screw 9. Pivoting about a pin in the member 10 is a lever 12 one arm of which has a pin-and-slot connection 16 with the bar 6 while the other carries a clamp for one end of the specimen 27, the clamp bolt 30 passing through a hole in the specimen. The other end of the specimen is similarly clamped to a block 25 carried by the free ends of parallel leaf springs 22, 20 secured to the element 10. When the bar 6 is reciprocated, the lever 12 is oscillated and the specimen bent. The device may accommodate more than one specimen as shown. For measuring the degree of bending a gauge as shown in Fig. 6 is used. A member 31 having two spaced knife edges 32 has pivoted to it a lever 34 which grips the specimen 27 between the knife edges. The plunger of a dial gauge 36 engages the lever 34 and measures the sag of the specimen.
GB11130/38A 1937-04-12 1938-04-12 Improvements in or relating to machines for the fatigue testing of materials by bending Expired GB493268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE493268X 1937-04-12

Publications (1)

Publication Number Publication Date
GB493268A true GB493268A (en) 1938-10-05

Family

ID=6544532

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11130/38A Expired GB493268A (en) 1937-04-12 1938-04-12 Improvements in or relating to machines for the fatigue testing of materials by bending

Country Status (1)

Country Link
GB (1) GB493268A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448133A (en) * 1945-02-02 1948-08-31 Baldwin Locomotive Works Bending fixture
US2514202A (en) * 1944-12-28 1950-07-04 Firestone Tire & Rubber Co Method and apparatus for testing tire tread cracking
US2724265A (en) * 1953-03-11 1955-11-22 Baldwin Lima Hamilton Corp Flexure testing fixture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514202A (en) * 1944-12-28 1950-07-04 Firestone Tire & Rubber Co Method and apparatus for testing tire tread cracking
US2448133A (en) * 1945-02-02 1948-08-31 Baldwin Locomotive Works Bending fixture
US2724265A (en) * 1953-03-11 1955-11-22 Baldwin Lima Hamilton Corp Flexure testing fixture

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