| 1. |
- Wittmer, M., et al.
(author)
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Mechanical properties of liquid-phase-bonded copper-ceramic substrates.
- 1982
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In: Journal of The American Ceramic Society. - : Wiley. - 0002-7820 .- 1551-2916. ; 65:3, s. 149-153
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Journal article (peer-reviewed)abstract
- Liquid-phase bonding of copper foils to ceramic substrates is a very attractive technique for the fabrication of metallized substrates for hybrid power electronics applications. The design and reliability considerations of such substrates necessitate the knowledge of their mechanical properties. Therefore, stresses and strains in the copper and in the ceramic of bonded substrates were investigated. Theoretical calculations are presented to support the experimental results.
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| 2. |
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| 3. |
- Östlund, Sören, et al.
(author)
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Asymptotic crack tip fields for dynamic fracture of linear strain-hardening solids
- 1988
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In: International Journal of Solids and Structures. - 0020-7683 .- 1879-2146. ; 24:11, s. 1141-1158
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Journal article (peer-reviewed)abstract
- Asymptotic crack tip fields, for dynamic crack propagation in an elastic-plastic material, have been calculated. The material is characterized by J2flow theory with linear-strain hardening. The possibility of plastic reloading on the crack flank is taken into account. Numerical results for the strength of the crack tip singularity, the angular positions of elastic unloading and possible plastic reloading regions, and the angular variation of the stress and velocity fields, are presented as functions of the crack tip speed and the ratio between tangent modulus and elastic modulus. Calculations have been performed for crack tip speeds below a certain limit velocity which depends on the tangent modulus and the loading conditions. The different loading modes which have been studied are modes I and II (plane strain and plane stress) and mode III (antiplane strain).
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| 4. |
- Berggren, Krister, 1946-
(author)
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Byggnadens tekniska verkningssätt
- 1989
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In: Kulturmiljövård. - Stockholm : Riksantikvarieämbetet. - 1100-4800. ; :3-4, s. 14-20
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Journal article (pop. science, debate, etc.)abstract
- Krister Berggren, chef för den tekniska specialavdelningen vid företaget Jacobson & Widmark i Stockholm, presenterar här fem kompletterande budord för grundförstärkare: Du skall icke missbruka betong — tänk på jämviktsvillkoren, lyder orden bl a.
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| 5. |
- Danhäll, D, et al.
(author)
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Naturligt grupperat arbete vid Volvo Lastvagnar – Delrapport 2
- 1989
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Reports (other academic/artistic)abstract
- Consumer report for the company in question (the Volvo Truck Company) which is financed by the company and partly also by a research foundation. It is a matter of a work that in this particular case were carried out during nine years in a number of experimental workshops located outside the Chalmers University of Technology. These workshops were financed by the Volvo Automobile and Truck companies. This achievement, as the final contribution to the Swedish automotive industry after having already treated this research field/problem area for more than two decades before this particular period if time (involving several junior and senior research competencies, as well as industrial and governmental foundings). Specifically (and as stated for the previous report), this publication explains how the authors dealt with the product architecture and product variation of the automotive products disassembled, which proved to necessary to be carried out in one of the experimental workshops (several complete automobiles and one heavy truck chassis were disassembled combined with having product data accessible in form of paper print-outs as well as by appropriate computer connections to the two Volvo companies etc.). That is, by using a special sort of “design analysis by means of axonometric hand-drawn illustrations” (see a conference contribution from 1992 that also is registered and available as o PDF-document at Chalmers Public Library (CPL) (a self-developed method found out together with a junior research competency from the School of Architecture at Chalmers).
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| 6. |
- Engström, Tomas, 1950, et al.
(author)
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Illustrationer av funktionella grupper och monteringsfaser
- 1988
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Reports (other academic/artistic)abstract
- Consumer report for the company in question (the Volvo Automobile Company) which is financed by the company and partly also by a research foundation. It is a matter of a work that in this particular case were carried out during nine years in a number of experimental workshops located outside the Chalmers University of Technology. This system of interrelated drawings was in the developed in the experimental workshop an formed the basis for the assembly work conducted at the Volvo Uddevalla plant (it explains/illustrated a so-called assembly-oriented product structure, which is something very different from the common Volvo companies so-called Function Group Register that instead is a design-oriented product structure) (see the authors' other publication). These workshops were financed by the Volvo Automobile and Truck companies. This achievement, as the final contribution to the Swedish automotive industry after having already treated this research field/problem area for more than two decades before this particular period if time (involving several junior and senior research competencies, as well as industrial and governmental founding). This system of interrelated drawing was developed in one of the experimental workshops together with e.g. operators (as well as senior research competency within vocational learning and training from Gothenburg University) from the temporary learning and training workshop predating the Volvo Uddevalla plant, and thereafter used for full-scale product purpose in the completed assembly plant. They were formalised by an information system used for such purposes. Thus, it is fair to state that these particular drawings were validated at an industrial scale, expressing an assembly-oriented product structure for the Volvo 700-model (note that the system represents years and years of work from both our and others side) (we were helped out by an architect from Chalmers University of Technology, who worked for years in one of the experimental workshops thereby helping us out to formalise the decomposed automotive products (see the authors’ other publications). Comment 1: See a conference contribution from 1992 that also is registered and available as o PDF-document at Chalmers Public Library (CPL) (a self-developed method found out together with e.g. a junior research competency from the School of Architecture at Chalmers as well as by getting helped out på the senior research competency withing vocational learning and training). Comment 2: Publishing reports, especially consumer reports, was the praxis during this (early) period of time at Chalmers University of Technology, as well as probably at some other universities. This means that frequent and vast academic publication by means of e.g. conference papers and refereed contributions to scientific journals was almost unheard of. At least so for some of the applied science disciplines. However, today are the situation indeed very different (i.e. earlier was the publication in many respects focused on trying to satisfy the executive administrator the research foundation in question etc.).
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| 7. |
- Biörnstad, Margareta, 1928-2019
(author)
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Grundläggningsarbeten i kulturhistorisk miljö
- 1989
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In: Kulturmiljövård. - Stockholm : Riksantikvarieämbetet. - 1100-4800. ; :3-4, s. 4-7
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Journal article (pop. science, debate, etc.)abstract
- Jag välkomnar det här symposiet som jag hoppas skall kunna fungera både som forum för utbyte av erfarenheter och som avstamp för ett fortsatt mer systematiskt arbete, sade riksantikvarie Margareta Biörnstad till symposiedeltagarna. Och det blir en fortsättning. Nyligen togs en första kontakt för bildandet av en referensgrupp som skall initiera en uppföljning av genomförda grundförstärkningar. Diskussioner kommer också att föras för val av framtida forskningsprojekt, eventuellt experimentbyggande.
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| 8. |
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| 9. |
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| 10. |
- Arén, Björn, et al.
(author)
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Die tool dimensioning by finite element method
- 1987
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In: Powder Metallurgy. - : Informa UK Limited. - 0032-5899 .- 1743-2901. ; 30:2, s. 87-96
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Journal article (peer-reviewed)abstract
- Stress and strain are studied using the finite element method in the dimensioning of prestrained die tools for powder compaction. The die geometry has been varied and the die has also been subjected to different types of load. The study shows that the mean pressure transverse to the pressing direction is a dimensioning factor, but that the distribution itself is not very important. For a linear pressure distribution, the stress and strain within the die will differ little from results produced under the assumption of an exponential pressure distribution. Attention is also paid to the possibilities of treating the three-dimensional situation in a real die by different methods of two-dimensional FEM analysis
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