Whether you need to measure dimensions or perform some sort of flaw detection on sheet, tube, or pipe, you'll find what you need in this technology area. It discusses measuring coordinates, diameters, and hardnesses; flaw detection using eddy current, ultrasonic, radiographic, and X-ray systems; and using a few other equipment types, such as vision systems and material composition analyzers.
July 25, 2002
In-process sampling and between-process checks can prevent problems at the production stage. Although using an inspection jig can be costly, some testing approaches that are not as rigorous as using an inspection jig are: stacking and blocking a sheared batch in order to scan the batch for variations; weighing castings; touring a customer's facility; and doing small batch inspections.
March 14, 2002
This article examines the common weld defect known as incomplete fusion. It takes an in-depth look at the causes of this problem, how it is detected, and how to prevent it.
February 14, 2002
This article outlines the differences in radiographic and ultrasonic weld inspection, the two most common methods if nondestructive testing. It gives an overview of both methods, including how they are used.
January 24, 2002
Many aspects of welded component design and fabrication are governed by documents known as codes and standards.
November 15, 2001
The article discusses special considerations that must be kept in mind when hardness testing tube and pipe. Rockwell and Brinell are covered. Special considerations include surface finish, wall thickness, deflection, and internal supports.
November 15, 2001
This article discusses the capabilities and limitations of the two most common online tube monitoring test methods -- eddy current and ultrasonic. It discusses the types of flaws that each is capable of detecting, and shows photographs of three typical flaws -- one that was detected by ultrasonic, one by eddy current, and one by both. It concludes by showing that both methods should be used to provide the most comprehensive testing of welded tube.
September 17, 2001
An eddy current flaw detection system is suitable for detecting discontinuities in tube and pipe during the production process. Understanding about eddy current system principles and this technology's capabilities and limitations can help tube and pipe producers learn how to use such a system.