Abstract

Present needs for higher-pressure compressor cylinders for natural-gas pipe lines introduce complexities of design and manufacture. Through full-scale fatigue testing, designs incorporating high-strength cast irons are proved suitable at considerable saving to the user. Comparison of the fatigue-test failure of the design to the fatigue strength of the material used indicates the maximum safe working pressures permissible for various suction pressures. In this manner a new design is evaluated, eliminating the risks involved in former practice where field service was the only criterion of performance.

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