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1

Macroscopic response and decohesion models of metal-polymer laminates

Bolzon G., Shahmardani M.

Engineering Transactions

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2017

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Vol. 65, iss. 1

53--59

EN

Metal-polymer laminates are used in several technological fields, with applications ranging from flexible electronics to food packaging and lightweight components for transportation sectors. Models of different complexity have been proposed to evaluate the overall performances of these materials. Models are also used to recover the adhesion properties of the plies, which are difficult to be characterized otherwise. The overall material responses resulting from different constitutive assumptions are examined in this paper.

2

Urządzenie do laserowej mikroobróbki materiałów (ULMM-1)

Kocik M., Barbucha R., Tański M., Mizeraczyk J., Sabotinov N. V.

Zeszyty Naukowe Akademii Morskiej w Gdyni

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2008

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nr 59

122-132

PL

W artykule przedstawiono prototyp urządzenia do laserowej mikroobróbki materiałów ULMM-1. Urządzenie przeznaczone jest do cięcia cienkich folii metalowych, a w szczególności do wykonywania szablonów do nakładania pasty lutowniczej w procesie wytwarzania płytek drukowanych metodą montażu powierzchniowego. Przedstawiono konstrukcję urządzenia, jego parametry techniczne, możliwości i przykłady zastosowania.

EN

In this paper a prototype of laser system for micromachining of the materials (ULMM-1) is presented. This system is used for metal foils cutting, in particular for cutting stencils for cladding soldering paste in PCB production process. In this paper a schema, parameters, capabilities and examples of ULMM-1 applications are presented.

3

Effect of sheet thickness on deep drawing of metal foils

Marumo Y., Saiki H., Ruan L.

Journal of Achievements in Materials and Manufacturing Engineering

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2007

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Vol. 20, nr 1-2

479-482

EN

Purpose: The objective of the present work is to study the influence of sheet thickness on blank holding force and limiting drawing ratio. Design/methodology/approach: Variation in blankholding force and limiting drawing ratio in deep drawing of metal foils were evaluated by calculation. Findings: The paper shows variation in the blankholding force required for the elimination of wrinkling and the limiting drawing ratio with sheet thickness. The blankholding force required for the elimination of wrinkling increased rapidly as the sheet thickness decreased. When the sheet thickness was very thin, the blankholding force was strongly influenced by the coefficient of friction. The limiting drawing ratio decreased as sheet thickness decreased and it decreased rapidly below 0.04 mm thickness. When the sheet thickness was very thin, the limiting drawing ratio was strongly influenced by the coefficient of friction. Research limitations/implications: The control of the loading path of blankholding force will be an effective way to prevent the formation of defects including fractures and wrinkles in deep drawing of metal foils. Practical implications: When deep drawing of metal foils is carried out, the control of loading path of blankholding force during deep drawing operation can be very effective for improving the limiting drawing ratio. Originality/value: The contribution of the conducted reseach is observed in a possible view of improvement of deep drawability of metal foils.