Requirements for Flexure Testing of Brittle Materials

Baratta, FI

doi:10.1520/stp35245s

Cited by 47 publications

(56 citation statements)

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“…This eliminates expensive hydraulic testing equipment necessary for compression and tension test loads. However, bend tests are more prone to error due to variations pointed out by Baratta [10].…”

Section: Elastic Modulus Testsmentioning

confidence: 99%

Measurement of Elastic Modulus of PUNB Bonded Sand as a Function of Temperature

Thole

Beckermann

2010

Inter Metalcast

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Section: Elastic Modulus Testsmentioning

confidence: 99%

Measurement of Elastic Modulus of PUNB Bonded Sand as a Function of Temperature

Thole

Beckermann

2010

Inter Metalcast

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“…Die möglichen Meßfehler bei der Durchführung dieser Versuche wurden genau analysiert [10,11]. Bei der Beanspruchung biegt sich die Probe durch und es kommt zu einer Relativbewegung zwischen Probe und Auflager.…”

Section: Introductionunclassified

Ein einfacher Festigkeitsversuch für Scheiben aus spröden Werkstoffen

Dänzer¹,

Börger²,

Supancic³

et al. 2003

Materialwissenschaft Werkst

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The Ball-on-three-balls test (B3B) is a simple method for strength tests of brittle discs. A disc shaped sample is supported on three points at the top surface and centrally loaded from the opposite site. Both the support and the application of load is realised with spherical parts. This test assembly shows a threefold symmetry. In this work the B3B test assembly is used for tests on samples made of alumina. The size of the samples, the ratio of disc thickness to disc diameter and the support situation is varied systematically. It was possible to confirm the numerical results for the maximum stress in the disc with fracture experiments. Therefore the Weibull behaviour of the ceramic has to be taken into account.Advantages of the ball-on-three-balls test are especially the great tolerance for small deviations of the real from an idealised geometry, the ability to test slightly bended discs, i.e. as sintered samples, the small influence of frictional effects and the great potential for testing very small samples. A disadvantage is the more complicated test evaluation compared to the common bending test.

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“…It is assumed that the four chamfers are identical in size. The true moment of inertia, I t , for a beam with four identical rounded edges of radius r, as shown in Figure 2 [16], is …”

Section: Introductionmentioning

confidence: 99%

Elastic Modulus by Resonance of Rectangular Prisms: Corrections for Edge Treatments

Quinn¹,

Swab²

2000

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The dynamic elastic moduli of isotropic, homogeneous ceramics is commonly determined by resonance methods. A prismatic beam specimen is vibrated in a flexural mode, and the resonant frequency is measured. The beam may have a square, rectangular, or circular cross section. Elastic modulus is determined from the resonant frequency, the mass or density of the prism, and the beam's physical dimensions. Under ideal circumstances, the beam cross section should have a simple prismatic shape, but in practice, the method is sometimes applied to rectangular specimens with edge chamfers or radii that are applied to reduce edge flaw sensitivity during strength tests. The effect of such edge treatments on the resonance frequency and a simple means to correct the calculated elastic modulus for the edge treatment are provided in this note.

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Requirements for Flexure Testing of Brittle Materials

Cited by 47 publications

References 0 publications

Measurement of Elastic Modulus of PUNB Bonded Sand as a Function of Temperature

Measurement of Elastic Modulus of PUNB Bonded Sand as a Function of Temperature

Ein einfacher Festigkeitsversuch für Scheiben aus spröden Werkstoffen

Elastic Modulus by Resonance of Rectangular Prisms: Corrections for Edge Treatments

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