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Article
Publication date: 15 January 2024

Mohammad A Gharaibeh, Markus Feisst and Jürgen Wilde

This paper aims to present two Anand’s model parameter sets for the multilayer silver–tin (AgSn) transient liquid phase (TLP) foils.

Abstract

Purpose

This paper aims to present two Anand’s model parameter sets for the multilayer silver–tin (AgSn) transient liquid phase (TLP) foils.

Design/methodology/approach

The AgSn TLP test samples are manufactured using pre-defined optimized TLP bonding process parameters. Consequently, tensile and creep tests are conducted at various loading temperatures to generate stress–strain and creep data to accurately determine the elastic properties and two sets of Anand model creep coefficients. The resultant tensile- and creep-based constitutive models are subsequently used in extensive finite element simulations to precisely survey the mechanical response of the AgSn TLP bonds in power electronics due to different thermal loads.

Findings

The response of both models is thoroughly addressed in terms of stress–strain relationships, inelastic strain energy densities and equivalent plastic strains. The simulation results revealed that the testing conditions and parameters can significantly influence the values of the fitted Anand coefficients and consequently affect the resultant FEA-computed mechanical response of the TLP bonds. Therefore, this paper suggests that extreme care has to be taken when planning experiments for the estimation of creep parameters of the AgSn TLP joints.

Originality/value

In literature, there is no constitutive modeling data on the AgSn TLP bonds.

Details

Soldering & Surface Mount Technology, vol. 36 no. 2
Type: Research Article
ISSN: 0954-0911

Keywords

Article
Publication date: 3 May 2016

Sergio Altomonte, Brian Logan, Markus Feisst, Peter Rutherford and Robin Wilson

This study aims to explore the opportunities offered by interactive and situated learning (e-learning and m-learning) in support of education for sustainability in disciplines of…

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Abstract

Purpose

This study aims to explore the opportunities offered by interactive and situated learning (e-learning and m-learning) in support of education for sustainability in disciplines of the built environment.

Design/methodology/approach

The paper illustrates the development of an online portal and a mobile app aimed at promoting students’ motivation and engagement with sustainability in design, and discusses the outcomes of their testing, investigating users’ acceptance, comparing academic results and analysing feedback.

Findings

The findings add empirical evidence to the view that information and communication technology-enhanced pedagogies can substantially contribute to the agenda of sustainability in higher education, primarily due to their affordance of interactive communication and contextualisation of knowledge, while guaranteeing flexible time and pace of learning.

Research limitations/implications

The study solely focused on the development and testing of e-learning and m-learning tools to foster students’ competence of sustainability in design studio work. The tools trialled were mostly at their prototypical stage and their testing included a relatively short-term evaluation and a narrow, self-selected, user base. However, the approach and findings are felt to be applicable to a much wider range of educational contexts.

Originality/value

Interactive and situated pedagogical methods and tools have the potential to prompt a departure from transmissive educational models, encompassing at once theoretical, experiential and analytic learning processes. This is of value to education for sustainability in disciplines of the built environment due to the requirement to holistically consolidate multi-/inter-/trans-disciplinary knowledge into a coherent design whole.

Details

International Journal of Sustainability in Higher Education, vol. 17 no. 3
Type: Research Article
ISSN: 1467-6370

Keywords

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