Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Operator bias in the estimation of arc efficiency in gas tungsten arc welding
University West, Department of Engineering Science, Division of Automation Systems. (PTW)ORCID iD: 0000-0001-5734-294X
2015 (English)In: Soldagem & Inspeção, ISSN 0104-9224, E-ISSN 1980-6973, Vol. 20, no 1, 128-133 p.Article in journal (Refereed) Published
Abstract [en]

In this paper the operator bias in the measurement process of arc efficiency in stationary direct current electrode negative gas tungsten arc welding is discussed. An experimental study involving 15 operators (enough to reach statistical significance) has been carried out with the purpose to estimate the arc efficiency from a specific procedure for calorimetric experiments. The measurement procedure consists of three manual operations which introduces operator bias in the measurement process. An additional relevant experiment highlights the consequences of estimating the arc voltage by measuring the potential between the terminals of the welding power source instead of measuring the potential between the electrode contact tube and the workpiece. The result of the study is a statistical evaluation of the operator bias influence on the estimate, showing that operator bias is negligible in the estimate considered here. On the contrary the consequences of neglecting welding leads voltage drop results in a significant under estimation of the arc efficiency. © 2015, Universidade Federal de Uberlandia. All rights reserved.

Place, publisher, year, edition, pages
2015. Vol. 20, no 1, 128-133 p.
Keyword [en]
Bias voltage; Efficiency; Electric arc welding; Electrodes; Gas metal arc welding; Gas welding; Ionization of gases; Tungsten; Welding; Welding electrodes, Direct current; Gas tungsten arc welding; Measurement procedures; Measurement process; Operator bias; Statistical evaluation; Statistical significance; Welding power source, Electric welding
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-8686DOI: 10.1590/0104-9224/SI2001.13ISI: 000360652100013Scopus ID: 2-s2.0-84939543117OAI: oai:DiVA.org:hv-8686DiVA: diva2:875361
Available from: 2015-12-01 Created: 2015-11-23 Last updated: 2017-12-01Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Sikström, Fredrik

Search in DiVA

By author/editor
Sikström, Fredrik
By organisation
Division of Automation Systems
In the same journal
Soldagem & Inspeção
Manufacturing, Surface and Joining Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 195 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf