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You searched on: Author: thomas siewert

Displaying records 51 to 60 of 76 records.
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51. Application of an On-Line Weld Monitoring System
Published: 9/12/2002
Authors: Thomas A. (Thomas A.) Siewert, Ivan Samardzic, Stefanija Klaric
Abstract: quisition analysis and real-time manipulation of the welding parameters offer added controls over the weld quality. Thanks to the continual development of information technology and electronics, it is possible to improve the systems for monitoring ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851294

52. Test Procedures for Developing Solder Data
Series: Special Publication (NIST SP)
Report Number: 960-8
Published: 8/1/2002
Authors: Thomas A. (Thomas A.) Siewert, C A. Handwerker
Abstract: This publication documents standardized test procedures that can produce valid and reproducible mechanical property data for lead-free solders. Such data speeds the application of lead-free solders in high-volume, automated production of electronic a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851260

53. Reliability Improvements in Repair Welding of High Strength Steels
Published: 7/1/2002
Authors: Ivan Samardzic, Thomas A. (Thomas A.) Siewert
Abstract: Engineers often have to deal with repair of weldments after they have been put into service. Here, the concern is that the service environment may have changed the structure, indepent of whether the problems originated during the initial constructio ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851372

54. Statistical Evaluation of a Round-Robin Experiment: Uncertainies in Ferrite Measurement in Weldments
Published: 7/1/2002
Authors: Thomas A. (Thomas A.) Siewert, J C Farrar, Z Zhang
Abstract: A Round Robin was organized to measure ferrite (FN) levels in the weld metal of five stainless steel weldments, including: types AISI 308H (with controlled ferrite), 2205 (22% Cr duplex), 309 Mo, 16-8-2 (316H - a lean composition with controlled ferr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851241

55. Observations on Differences Between the Energy Determined Using an Instrumented Striker and Dial/Encoder Energy
Published: 6/1/2002
Authors: M P Manahan, R B Stonesifer, Thomas A. (Thomas A.) Siewert, Christopher N McCowan, D P Vigliotti
Abstract: Instrumented stricker systems and optical encoders are widely used for measurement of absorbed energy in both conventional and miniature Charpy tests. It has been observed that the total absorbed energy measured using these two technologies, while g ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851234

56. The History and Importance of Impact Testing
Published: 5/1/2002
Authors: Thomas A. (Thomas A.) Siewert, M P Manahan, Christopher N McCowan, J M Holt, F J Marsh
Abstract: Charpy impact testing is a low-cost and reliable test method which is commonly required by the construction codes for fracture-critical structures such as bridges and pressure vessels. yet, it took from about 1900 to 1960 for impact-test technology ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851287

57. Database for Solder Properties With Emphasis on New Lead-Free Solders
Published: 1/1/2002
Authors: David R. Smith, Thomas A. (Thomas A.) Siewert, L Stephen, Juan C Madeni
Abstract: Legal and environmental considerations require that the electronics industries cease using solders containing lead. This database provides properties of lead-free solders that may be used to replace the solders containing lead that are currently in ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851162

58. Eleventh International Conference on Computer Technology in Welding
Series: Special Publication (NIST SP)
Report Number: 973
Published: 1/1/2002
Authors: Thomas A. (Thomas A.) Siewert, C Pollock
Abstract: These are proceedings of the eleventh conference in this series. The conference was held December 5 and 6, 2001, in Columbus, Ohio, under the sponsorship of the American Welding Society, NIST, and The proceedings include 32 presentations grouped int ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851251

59. Historical Background and Development of the Charpy Test
Published: 1/1/2002
Authors: L Toth, H P Rossmanith, Thomas A. (Thomas A.) Siewert
Abstract: The impact test method based on a pendulum, generally called the Charpy test, is one of the more cost-effective material testing procedures, both with respect to acceptance of products and to surveillance. This contribution attempts to present a br ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851252

60. Contact Tube Temperature During GMAW
Published: 12/1/2001
Authors: G Adam, Thomas A. (Thomas A.) Siewert, Timothy P Quinn, D P Vigliotti
Abstract: The rate of heating and the maximum temperature reached by the contact tube during gas metal arc welding (GMAW) is quantified. We studied the effect of changes in the contact-tube-to-work distance (CTWD), voltage, welding wire feed speed, gas flow r ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851177



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