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Testing and Measuring Tech Cell >
Testing and Measuring Article List
Testing and measuring related articles
There are 17 articles related to testing and measuring.
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By: Hari Muthuswami - www.thefabricator.com, 3/11/08
 This article has been viewed: 634 times.  Printed: 80 times
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By: Patrick J. Cain, Ph.D. - www.thefabricator.com, 3/11/08
This article has been viewed: 1,057 times. Printed: 98 times
Determining whether a tube seam has a partial bond can be difficult with standard ultrasonic or eddy current techniques. However, multifrequency, probe-based eddy current equipment can detect poor-diffusion bonds in nonferrous materials. Using a penetrating field to reflect a signal off the planar s...
By: John Wallace - www.thefabricator.com, 12/11/07
This article has been viewed: 907 times. Printed: 102 times
Statistical process control (SPC) often is used to reduce the number of manufacturing defects. However, it has other uses also. It can serve to increase productivity and therefore improve a company’s profitability. Statistical tools and Pareto diagrams can help you to track manufacturing problems an...
By: Lewis Warren - www.thefabricator.com, 10/9/07
This article has been viewed: 2,931 times. Printed: 116 times
Conventional quality control in tube bending operations usually means detecting the number of links on a tube bending mandrel. When such a system detects that a mandrel link is missing, it shuts down the system so personnel can discard the last bent tube and replace the mandrel. Unfortunately, the b...
By: Paul Hogendoorn - www.thefabricator.com, 6/12/07
This article has been viewed: 2,514 times. Printed: 201 times
Manufacturing processes are prone to variances, resulting in manufactured products that do not conform to specifications. Dozens of types of electronic sensors and measurement systems are available that fabricators can use to verify that their products are not defective. Understanding what types of ...
By: Dave Bird - www.thefabricator.com, 3/13/07
This article has been viewed: 3,444 times. Printed: 170 times
Although eddy-current testing is king in the tube production industry, flux leakage is worth a look. Using a small test sample, equipment-maker InspecTech found that for 3.50-in. to 4.00-in. carbon steel tubing with wall thickness from 0.056 in. to 0.100 in., the flux leakage method found more defec...
By: A.C. Richardson, Murray Rose, and Rick Northrup - www.thefabricator.com, 7/11/06
This article has been viewed: 5,357 times. Printed: 244 times
Most manufacturers measure or test parts to verify that the parts meet quality standards. This conventional approach is time-consuming because testing adds steps and time to the production process. Furthermore, it is only as good as the sample size. A different approach to quality is to use a strain...
By: Paul Hogendoorn - www.thefabricator.com, 4/11/06
This article has been viewed: 4,494 times. Printed: 288 times
Portable technology is available that can help fabricators positively identify the alloys used in a weldment. This is especially critical when a fabricator is trying to match a filler alloy to a base alloy and application.
By: Tom Anderson and Jim Pasmore - www.thefabricator.com, 1/10/06
This article has been viewed: 5,408 times. Printed: 307 times
Fabricators and contractors always should check to be sure that the extent of nondestructive examination and the acceptance criteria required are understood clearly by all parties and documented in writing.
By: Walter J. Sperko, P.E. - www.thefabricator.com, 7/12/05
This article has been viewed: 13,404 times. Printed: 807 times
How do you check tube fabrications to ensure they meet quality standards? Do you ship parts without checking them and hope that the next time the phone rings it isn’t a prelude to a tirade from a disgruntled customer? Or do you check finished parts only to realize that your scrap rate is too high an...
By: Dave Petrack, Contributing Writer - www.thefabricator.com, 7/10/03
This article has been viewed: 7,501 times. Printed: 814 times
In May, automotive quality gurus J.D. Power & Associates released the results of its 2003 Initial Quality Study (IQS). As is the case every year, the winners will trumpet their scores while the losers will promise improvement. A closer look at the numbers, however, reveals some interesting observati...
By: Bernard Swiecki, Contributing Writer - www.thefabricator.com, 7/10/03
This article has been viewed: 4,337 times. Printed: 479 times
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 variation...
By: Gerald Davis, Contributing Writer - The FABRICATOR®, 7/25/02
This article has been viewed: 3,976 times. Printed: 489 times
Coordinate measuring machines have progressed since their inception in the 1970s.
By: Jean-Charles Granger, Contributing Writer - www.thefabricator.com, 7/11/02
This article has been viewed: 4,444 times. Printed: 513 times
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, o...
By: Donald N. Bugden, Christopher McAllister, Kris Whitmore, Greg Maurer, and Larry Wells, Contributing Writers - www.thefabricator.com, 11/15/01
This article has been viewed: 5,382 times. Printed: 529 times
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.
By: Edward Tobolski, Contributing Writer - www.thefabricator.com, 11/15/01
This article has been viewed: 9,164 times. Printed: 699 times
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By: Brian Roberts, Contributing Writer - www.thefabricator.com, 9/17/01
This article has been viewed: 6,091 times. Printed: 629 times
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