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http://dx.doi.org/10.3795/KSME-A.2015.39.8.781

Durability Assessment of Polyoxymethylen Using Ultrasonic Fatigue Testing  

Cho, In Sik (Mbrosia Co., Ltd.)
Hwang, Jung Ho (Mbrosia Co., Ltd.)
Oh, Joo Yeon (Mbrosia Co., Ltd.)
Kim, Hyun Chang (Dept. of Hybrid Engineering, SunMoon Univ.)
Oh, Sae Hoon (Dept. of Hybrid Engineering, SunMoon Univ.)
Lee, Chang Soon (Dept. of Hybrid Engineering, SunMoon Univ.)
Park, In Gyu (Dept. of Hybrid Engineering, SunMoon Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.39, no.8, 2015 , pp. 781-785 More about this Journal
Abstract
In this study, a newly developed ultrasonic fatigue test was performed for durability assessment of polyoxymethylene engineering plastic, which has a high crystallization rate and degree of crystallization. Fatigue strength of POM (polyoxymethylene) was performed on a piezoelectric UFT developed by Mbrosia Co., Ltd(1), operating at a high frequency of 20 kHz. The test results showed a fatigue limit of 5.0~6.0 MPa under fatigue testing at R = -1, 20kHz; and, electron microscopy revealed the size effect by risk volume and fractured dimple structure after the coalescence of micro-voids through the crazing effect, which occurs during the failure of a polymer.
Keywords
Ultrasonic Fatigue Test; Engineering Plastic; Polyoxymethylen; Dynamic Young's Modulus;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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