Testing and Measuring Articles

Results: 22

	Finding seemingly insignificant flaws Part II : Part II: Coil selection, equipment location, system implementation By: Richard L. Fisher If an image is not displayed, click the hyperlinked figure number to view it. Editor's Note: This article, the second of a two-part series,... Publish date: July 17, 2009
	Finding seemingly insignificant flaws Part I : Part I: Principles of inline eddy current testing By: Richard L. Fisher If an image is not displayed, click the hyperlinked figure number to view it. Editor's Note: This article, the first of a two-part series,... Publish date: June 10, 2009
	Finding seemingly insignificant flaws : Part I: Principles of inline eddy current testing By: Richard L. Fisher If an image is not displayed, click the hyperlinked figure number to view it. Editor's Note: This article, the second of a two-part series,... Publish date: June 10, 2009
	Inspecting and verifying fillet weld size : How one company developed a tool for actual variable readings By: Joe Pavilanis If an image is not displayed, click the hyperlinked figure number to view it. Figure 1 When touching the face of the weld, the digital... Publish date: May 19, 2009
	Precision measurement 101 : Correct use of measurement tools gives foundation for quality By: Scott Robinson and Mike Baczewski If an image is not displayed, click the hyperlinked figure number to view it. Measurement tools form the basic foundation of quality at any... Publish date: March 24, 2009
	Eddy current testing strategies for copper tube : How and where to test By: Hari Muthuswami Stationary sensors (through-coil type, left) and scanning sensors (rotating type, above) differ in modes of operation and flaws they detect.... Publish date: March 11, 2008
	Under pressure? : Selecting the right pressure test for verifying a tubular component's integrity By: Patrick J. Cain, Ph.D. It's one thing to manufacture a tube; it's another to test it to verify its characteristics. Regardless of the raw material or the production... Publish date: March 11, 2008
	Finding poor-diffusion bonds in ferrous, nonferrous tubes : Pursuing, preventing pasty welds By: John Wallace Figure 1 A common problem in laser welding is misalignment between the laser beam and the tube's seam. Two small portions of the weld seam,... Publish date: December 11, 2007
	Measure it, graph it, control it : You cannot control what you do not measure By: Lewis Warren You have probably heard of statistical process control (SPC), and you probably use it as a tool for quality assurance or quality control.... Publish date: October 9, 2007
	Bend process monitoring—small changes lead to big results : Mandrel force monitor detects broken mandrels, other process changes By: Paul Hogendoorn In many advanced fabrication shops, tube bending is a highly automated process that uses robotic and CNC bending machines to produce high... Publish date: June 12, 2007
	Error-free tube fabrication : Electronic sensing devices provide an ounce of prevention By: Dave Bird In addition to detecting the weld seam, some modern electronic sensors are sophisticated enough that, when properly programmed, they can... Publish date: March 13, 2007
	Electromagnetic test methods for welded carbon steel tubing : Capabilities and limitations By: A.C. Richardson, Murray Rose, and Rick Northrup Tube producers routinely test weld seams in carbon steel on the tube mill as the product is made. Such testing is a vital part of any... Publish date: July 11, 2006
	What do you monitor to ensure quality? : Forget parts�focus on the process By: Paul Hogendoorn The crimp force monitor is sensitive enough to indicate a process failure when a single sheet of paper disrupts the crimping cycle. This... Publish date: April 11, 2006
	Positive ID : Portable technology helps verify alloy weldment chemistry By: Tom Anderson and Jim Pasmore Using the right filler material is a major factor in successfully joining alloys because it affects a welded joint's quality and integrity.... Publish date: January 10, 2006
	Random radiography : What the fabricator or contractor and the owner need to agree on By: Walter J. Sperko, P.E. Fabricators and contractors always should check to be sure that the extent of nondestructive examination and the acceptance criteria... Publish date: July 12, 2005
	The problem with quality : A closer look at quality ratings By: Bernard Swiecki, Contributing Writer The companywide scores, which represent the number of problems per 100 vehicles, are as follows: Considerable variation exists among... Publish date: July 10, 2003
	Do you use checking jigs and fixtures? : An ounce of prevention is worth a pound of cure By: Dave Petrack, Contributing Writer The effect that checking fixtures have on your operating bottom line is so important that they should be given a much higher priority than... Publish date: July 10, 2003
	Monitoring the quality of welded tube and pipe By: Brian Roberts, Contributing Writer Figure 1: Eddy-current flow follows a closed-loop pattern unless interrupted by a crack, pin-hole, or similar discontinuity. Eddy... Publish date: September 17, 2001
	Rockwell hardness and Brinell testing of tube and pipe : Special factors merit attention to ensure proper results By: Edward Tobolski, Contributing Writer All hardness testing methods require a good understanding of the testing process to obtain accurate results. Hardness, while technically... Publish date: November 15, 2001
	Technology modernizes CMMs : Hardware, software progress to enhance these shop tools By: Jean-Charles Granger, Contributing Writer Coordinate measuring machines have progressed since their inception in the 1970s. Original machines were benchtop-mounted, cumbersome to use, and... Publish date: July 11, 2002
	Some 'near-jig' ideas : In-process testing is the true path to happiness By: Gerald Davis, Contributing Writer I'd like to have a conversation with you about my quality control philosophy. Given the constraints of this media, how about if I type and you... Publish date: July 25, 2002
	Using NDT systems to monitor welded tube production : Two methods are better than one By: Donald N. Bugden, Christopher McAllister, Kris Whitmore, Greg Maurer, and Larry Wells, Contributing Writers If an image is not displayed, click the hyperlinked figure number to view it. Figure 1 Figure 1 Although tube producers al�most... Publish date: November 15, 2001

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