Assessment of thermal degradation by cumulative variation of ultrasonic nonlinear parameter

被引:0
|
作者
Jongbeom Kim
Kyung-Young Jhang
机构
[1] Hanyang University,Department of Mechanical Convergence Engineering
[2] Hanyang University,School of Mechanical Engineering
来源
International Journal of Precision Engineering and Manufacturing | 2017年 / 18卷
关键词
Cumulative ultrasonic nonlinear parameter; Ultrasonic nonlinear parameter; Thermal degradation; Aluminum alloy; Precipitation;
D O I
暂无
中图分类号
学科分类号
摘要
The ultrasonic nonlinear parameter β has been studied for the evaluation of material degradation. However, there is a limit to the assessment of degradation induced by thermal aging in aluminum alloy because the nonlinear parameter may fluctuate with the aging time and thus it has not one-to-one correspondence with the thermal degradation. In order to overcome such limitation, we propose a cumulative nonlinear parameter βc defined by the accumulation of variation in the nonlinear parameter over the aging time. For verifying the usefulness of the proposed parameter, two kinds of aluminum alloy specimens heat-treated with different aging temperatures and aging times were tested. After the ultrasonic test has been completed, the tensile test was conducted for all specimens to measure the yield strength as a quantitative index of material degradation. Results showed that the nonlinear parameter β fluctuated in directions of both increase and decrease, while the strength decreased one-sidedly with the increase of aging time. On the other hand, the proposed parameter βc was one-sidedly increased, which showed strong exponential negative correlation with the yield strength. These tendencies were similar in different material and different aging temperature.
引用
收藏
页码:23 / 29
页数:6
相关论文
共 50 条
  • [1] Assessment of thermal degradation by cumulative variation of ultrasonic nonlinear parameter
    Kim, Jongbeom
    Jhang, Kyung-Young
    INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING, 2017, 18 (01) : 23 - 29
  • [2] Ultrasonic assessment of material degradation by thermal fatigue
    Pitkänen, J
    Kauppinen, P
    Jeskanen, H
    BALTICA VI: LIFE MANAGEMENT AND MAINTENANCE FOR POWER PLANTS, VOL 1 AND 2, 2004, 233-234 : 681 - 686
  • [3] Ultrasonic assessment of material degradation by thermal fatigue
    Pitkänen, J
    Kauppinen, P
    Jeskanen, H
    COMPETENT DESIGN BY CASTINGS: IMPROVEMENTS IN A NORDIC PROJECT, 2005, 237 : 123 - 131
  • [4] A study on precipitation characteristics induced strength variation by nonlinear ultrasonic parameter
    Mondal, Chandan
    Mukhopadhyay, Amretendu
    Sarkar, Rajdeep
    JOURNAL OF APPLIED PHYSICS, 2010, 108 (12)
  • [5] Reliability Assessment for Nonlinear Degradation Data with Individual Variation
    Cai, Zhongyi
    Chen, Yunxiang
    Wang, ZeZhou
    Luo, Chengkun
    PROCEEDINGS OF THE 2015 FIRST INTERNATIONAL CONFERENCE ON RELIABILITY SYSTEMS ENGINEERING 2015 ICRSE, 2015,
  • [6] IMAGING THE NONLINEAR ULTRASONIC PARAMETER OF A MEDIUM
    ICHIDA, N
    SATO, T
    LINZER, M
    ULTRASONIC IMAGING, 1983, 5 (04) : 295 - 299
  • [7] Fatigue Cumulative Damage Assessment of Gear in Service Based on Acoustic Emission and Nonlinear Ultrasonic Joint Method
    Yuhua Zhang
    Silong Quan
    Yuezhong Li
    Journal of Materials Engineering and Performance, 2023, 32 : 6133 - 6140
  • [8] Fatigue Cumulative Damage Assessment of Gear in Service Based on Acoustic Emission and Nonlinear Ultrasonic Joint Method
    Zhang, Yuhua
    Quan, Silong
    Li, Yuezhong
    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2023, 32 (14) : 6141 - 6141
  • [9] THERMAL ACTIVATION OF CUMULATIVE FATIGUE DAMAGE AT ULTRASONIC FREQUENCIES
    PUSKAR, A
    ULTRASONICS, 1977, 15 (03) : 124 - 128
  • [10] DEPENDENCE OF ULTRASONIC NONLINEAR PARAMETER B/A ON FAT
    ERRABOLU, RL
    SEHGAL, CM
    GREENLEAF, JF
    ULTRASONIC IMAGING, 1987, 9 (03) : 180 - 194