Participare la
International Conference on Material Science
and Engineering BraMat 2009
26 - 28 februarie Braşov România
Participarea a fost concretizata printr-o susţinere orala sustinuta de
N. Cimpoeşu, membru al echipei de cercetare, prezentată in format
power point.
Cat si prin depunerea spre publicare a unei lucrari stiintifice in
revista JOAM Symposia :
"ENERGY DISSIPATION CAPACITY OF A SHAPE MEMORY ALLOY
TYPE CuZnAl"
autori: N. CIMPOEŞU, S. STANCIU, C. NEJNERU, D. ACHIŢEI, V.
Manole, R. HANU CIMPOEŞU
Abstract
Energy dissipation manifest by mechanical energy transformation,
apply to a material, to thermal energy and as examples, with big
values are polymers materials and for reduce values the metallic
materials. The energy dissipation capacity of metallic materials was
observe at shape memory alloys with nice values of them internal
friction (IF) comparing with other metallic materials like steel, iron
cast, pure copper, pure aluminum. These big values of IF make from
these alloys good materials for practical applications having the
advantages of metallic materials properties also. In this paper a
shape memory alloy was investigate, with respect for amortization
capacity, chemical composition was determinate with a laboratory
spectrometer, using a differential dilatometer we test the memory
effect of material and for internal friction determination was used a
Dynamic Mechanical Analyzer (DMA). Alloy microstructure is
investigated, in this study, with a scanning electron microscope
(SEM). The obtain results present internal friction and sheer
modulus function of temperature at 1Hz test frequency.
