Non-destructive testing. Standard test method for determining residual stresses by neutron diffraction

Abstract This paper discusses four different ultrasonic guided wave standards. Three of them are China’s national standards or industry standards: GB/T 31211-2014 “Nondestructive Testing Ultrasound Guided Wave Detection”, GB/T 28704-2012“Non-destructive testing—Test method for ultrasonic guided wave testing based on magnetostrictive effects”, and DL/T 1452-2015 “Thermal Power Pipeline Ultrasound Guided Wave Detection”. The another one is ASTM E2929:“Standard Practice for Guided Wave Testing of Above Ground Steel Piping with Magnetostrictive Transfusion”. Through six aspects in this article, including testing application scope, preliminary requirements, standard specimen and comparative specimen, distant amplitude curve and time gain curve, the existing difference between China and America is obvious and diversity. It is necessary to explore the underlying reasons for the connection of Chinese code and international code in the field of Non-destructive testing. During the standardization, anyone of the standard should be actually compared on the presentation of chart, and the verification and comparison of results, and lists the similarities and differences of each part based on GB31211. This paper provides reference for China to integrate with foreign standards in the field of ultrasonic guided wave detection of pressure vessel and pipelines.

Download Full-text

Standard Test Method for Measurement of Film Thickness of Thin-Film Coatings by Non-Destructive Means Using Ruggedized Optical Interference

10.1520/d8331_d8331m ◽

2020 ◽

Author(s):

Keyword(s):

Thin Film ◽

Film Thickness ◽

Standard Test ◽

Test Method ◽

Optical Interference ◽

Film Coatings ◽

Thin Film Coatings ◽

Standard Test Method ◽

Non Destructive

Download Full-text

The Defect Analysis of Carbonsteel Pipe Welding Connections Using Non-Destructive Testing with the Penetrant Test Method

Risenologi : Jurnal Sains, Teknologi, Sosial, Pendidikan, dan Bahasa ◽

10.47028/j.risenologi.2020.51.72 ◽

2020 ◽

Vol 5 (1) ◽

pp. 38-47

Author(s):

Nur Ichsan Sumardani ◽

Ngainun Ibnu Setiawan ◽

Bebeh Wahid Nuryadin ◽

Dadan Sumardani

Keyword(s):

Surface Defects ◽

Welding Process ◽

Test Method ◽

Test Results ◽

Non Destructive Testing ◽

Destructive Testing ◽

Pipe Welding ◽

Materials Used ◽

Non Destructive ◽

Penetrant Testing

In a welding process carried out on metallic materials is sometimes found defects in the material being tested, it is caused by many factors, such as the lack of good materials used and the lack of perfection of the welding process. At testing, it aims to know the surface defects in carbonsteel pipes to know the defects arising after welding. This test is performed with non-destructive tests (NDT) using Dye Penetrant testing method. This test uses 3 types of liquids, including; Cleaner, Penetrant, and developer. The results of these tests will then be observed whether defects occur after welding and what factors affect it. From the test, results there are known 10 locations defects on the surface of the carbonsteel pipe welding with a type of rounded indication of defects that are then followed up by re-welding on indications of such defects.

Download Full-text