Strain rate and temperature dependence of flexural strength of C/A hybrid unidirectional FRP laminates.

Extensive experimental research has been done on rate-dependent properties normal concrete, but very little on the tensile properties of steel fiber reinforced concrete (SFRC). In this article, based on a high-speed Instron servo-controlled hydraulic materials test machine is adopted to investigate the strain rate-dependent properties of bending tensile properties for SFRC. The scheme of experiment, the works of specimens fabricating and the processes of both loading and measuring were introduced. A total of 30 beam specimens are tested. The steel fiber content is varied: 0%, 1.0%, 2.0%, 3.0% and 4.0% by volume. The experimental results were analyzed. The emphasis is put on the study of the flexural strength changes of SFRC under different strain rates. It is discovered that, with the improvement of the strain rate, increasing strength of SFRC is very obvious. While the strain rate increases from 1.4×10-4s-1 to 0.53×10-4s-1, the flexural strength increasing around 30%.

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Strain Rate and Temperature Dependence of Deformation and Fracture Behaviour of a Nimonic PE 16 Superalloy

High Temperature Materials and Processes ◽

10.1515/htmp.1986.7.1.63 ◽

1986 ◽

Vol 7 (1) ◽

pp. 63-81 ◽

Cited By ~ 18

Author(s):

K. Bhanu Sankara Rao, ◽

V. Seetharaman, ◽

S.L. Mannan, ◽

P. Rodriguez,

Keyword(s):

Strain Rate ◽

Temperature Dependence ◽

Fracture Behaviour ◽

Deformation And Fracture

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Strain Rate Dependence of the Flow Stress and Work-Hardening of Single Crystals of NI3(Al,Hf)B

MRS Proceedings ◽

10.1557/proc-364-695 ◽

1994 ◽

Vol 364 ◽

Author(s):

S. S. Ezz ◽

Y. Q. Sun ◽

P. B. Hirsch

Keyword(s):

Flow Stress ◽

Strain Rate ◽

Temperature Dependence ◽

Single Crystals ◽

Yield Stress ◽

Strain Rate Sensitivity ◽

Work Hardening ◽

Room Temperature ◽

Rate Sensitivity ◽

Controlling Mechanism

AbstractThe strain rate sensitivity ß of the flow stress τ is associated with workhardening and β=(δτ/δln ε) is proportional to the workhardening increment τh = τ - τy, where τy is the strain rate independent yield stress. The temperature dependence of β/τh reflects changes in the rate controlling mechanism. At intermediate and high temperatures, the hardening correlates with the density of [101] dislocations on (010). The nature of the local obstacles at room temperature is not established.

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Time and Temperature Dependence of the Ultimate Properties of an SBR Rubber at Constant Elongations

Rubber Chemistry and Technology ◽

10.5254/1.3540259 ◽

1961 ◽

Vol 34 (3) ◽

pp. 897-909

Author(s):

Thor L. Smith ◽

Paul J. Stedry

Keyword(s):

Tensile Strength ◽

Strain Rate ◽

Temperature Dependence ◽

Rate Dependence ◽

Strain Rates ◽

Type Specimens ◽

Stress Strain ◽

Ultimate Elongation ◽

Tensile Tester ◽

Ultimate Properties

Abstract A study was made previously of the temperature and strain rate dependence of the stress at break (tensile strength) and the ultimate elongation of an unfilled SBR rubber. In that study, stress-strain curves to the point of rupture were measured with an Instron tensile tester on ring type specimens at 14 temperatures between −67.8° and 93.3° C, and at 11 strain rates between 0.158×10−3 and 0.158 sec−1 at most temperatures. The tensile strength was found to increase with both increasing strain rate and decreasing temperature. At all temperatures above −34.4° C, the ultimate elongation was likewise found to increase with increasing strain rate and decreasing temperature but at lower temperatures the opposite dependence on rate was observed; at −34.4° C, the ultimate elongation passed through a maximum with increasing rate.

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