Download or read book GB T 38898 2020 Translated English of Chinese Standard GBT 38898 2020 GB T38898 2020 GBT38898 2020 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2020-09-26 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the non-destructive testing method of coating bond strength based on the principle of ultrasonic wave, including terms and definitions, personnel qualifications, testing methods, ultrasonic testing equipment, testing conditions, testing requirements, compilation of testing report. This standard is applicable to coating structures composed of metal and nonmetal materials with good sound permeability, including coatings, substrates, bonding layers, including the non-destructive testing of the bond strength of wear-resistant and thermal barrier structures formed by bonding, sintering, chemical and metal bonding.