Ahmed Al-Mukhtar

Ahmed Al-Mukhtar

Institute of Structural Mechanics (ISM), Bauhaus University, Weimar, Weimar, Thuringia, Germany
orcid
Everything is material, and every material is fractured.

Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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26 March 2010 in Journal of Materials Engineering and Performance
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AAAhmed Al-Mukhtar
Ahmed Al-Mukhtar
HBH. Biermann
H. Biermann
PHP. Hübner
P. Hübner
SHSebastian Henkel
Sebastian Henkel

1 June 2016 in Advanced Engineering Forum
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AAAhmed Al-Mukhtar
Ahmed Al-Mukhtar
The engineering parts joining by the spot welding require acceptable properties to survive the loading conditions XE "temperature". Several studies show that the welding variables have an effect on the properties of spot nugget XE "nugget" and on the future cracking. This review summarizes the resistance spot welding process (RSW). It introduces the basic spot welding principles, experiments XE"experiments" , limitation and defects XE "defects". The new concepts and awareness were presented. The results from the series of scientific works and literature are discussed. The metal’s weldability, XE "spotweldability" strength, XE"strength" and fracture are the main topics in several structural analysis. The welding variables effect on the mechanical properties and performance XE "mechanicalproperties" of the structures is the key analysis. In general, the increasing of the heat input by adjusting the current, time, and pressure producing higher weld area in turn enhance the toughness. However, by increasing the weld area, the defects and cracking tend to appear. Hence, a desired weld size with the mechanical properties is required. The nugget fracture mode is changing from plug or button tearing to shear failure mode depending on the weld properties. The crack grows either from the internal defects or around the nugget.

6 January 2015 in Journal of Failure Analysis and Prevention
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AAAhmed Al-Mukhtar
Ahmed Al-Mukhtar
BMB. Merkel
B. Merkel

29 October 2009 in Journal of Materials Engineering and Performance
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Journal Article
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AAAhmed Al-Mukhtar
Ahmed Al-Mukhtar
HBH. Biermann
H. Biermann
SHSebastian Henkel
Sebastian Henkel
PHP. Hübner
P. Hübner

10 November 2013 in Advances in Materials Science and Engineering
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AAAhmed Al-Mukhtar
Ahmed Al-Mukhtar
QDQ. Doos
Q. Doos
The specimens of thickness 0.8 mm carbon steel number 1.8902 in a strip form were welded. The strips of lap joints and curved peeljoints configurations have been welded. The welding parameters such as weld current and weld time have been investigated. The relation between the weld area and the joint strength properties has been presented. The obtained results were showing that the weld joint strength and the molten area (weld nugget volume) highly increase with the increasing of weld current. Therefore, the correlation between the maximum load (joint strength) and area has been given. The reliable weldability under the tensile and shearing loading was considered. Therefore, the new limits of weldability have been presented to consider these two types of loading. Moreover, the experimental results were compared with the empirical relations that consider the sheet thickness only.

1 August 2013 in Journal of Failure Analysis and Prevention
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AAAhmed Al-Mukhtar
Ahmed Al-Mukhtar