A New Technique for Conducting Split Hopkinson Tensile Bar Test at Elevated Temperatures

In this paper some highlights are presented of an integrated numerical and experimental approach to obtain an in-depth understanding of the high strain rate behavior of materials. This is illustrated by an investigation of the multiphase TRansformation Induced Plasticity (TRIP) steel. ‘Classic’ high strain rate tensile experiments using a split Hopkinson tensile bar setup are complemented with strain rate jump tests, tensile tests at elevated temperatures and interrupted experiments. High strain rate compression and three-point bending experiments are performed on the steel sheets as well. The results reveal the excellent energy-absorption properties in dynamic circumstances of TRIP steels. Advanced experimental setups using the Hopkinson principle provide indeed tools for validation of the material and structural properties of TRIP steels.

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Pore probe: A new technique for measuring the concentrations of molecules inside porous materials at elevated temperatures

Journal of Catalysis ◽

10.1016/0021-9517(86)90358-1 ◽

1986 ◽

Vol 99 (2) ◽

pp. 335-341 ◽

Cited By ~ 25

Author(s):

D SANTILLI

Keyword(s):

Porous Materials ◽

Elevated Temperatures ◽

New Technique ◽

A New Technique

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A New Technique for Testing Abrasion Resistance of Refractories at Elevated Temperatures

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.105-106.230 ◽

2010 ◽

Vol 105-106 ◽

pp. 230-233

Author(s):

Xi Gao Peng ◽

Jia Lin Sun ◽

Gan Shi ◽

Shao Ping Huang

Keyword(s):

Elevated Temperature ◽

Ambient Temperature ◽

Abrasion Resistance ◽

Elevated Temperatures ◽

Sample Surface ◽

Compressed Air ◽

New Technique ◽

High Alumina ◽

Sample Chamber ◽

A New Technique

Based on an extensive comparison of test methods for abrasion resistance from home and abroad, a new technique for abrasion resistance at elevated temperature has been developed with some improvements. Two connected airtight chambers are designed to prevent compressed air from entering the sample chamber, so that heat loss of the sample chamber can be reduced and the chamber temperature is less disturbed. The sample surface temperature can reach stable within 5 min and the temperature fluctuation on sample surface can be less than 20°C in the course of inleting the compressed air at working temperatures up to1400°C. The repeatability was tested using float-glass plate as reference sample at ambient temperature and using high alumina bricks for elevated temperature. A variation coefficient under 7% at ambient temperature has been achieved. Comparison of abrasion resistance at elevated temperature was tested respectively on a high alumina brick and on a silicon nitride bonded silicon carbide brick and the results could be significantly distinguished. Nitrogen can be blown into sample chamber during heating the furnace to prevent nonoxide bearing samples from being oxidized.

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