Publications de Abu Salek Md. Fahim Chowdhury

The effect of the orientation of the basal plane on the mechanical loss in magnesium matrix composites studied by mechanical spectroscopy

Robert Schaller, Daniele Mari, Abu Salek Md. Fahim Chowdhury

In metal matrix composites, thermal stresses are relaxed by either interface debonding, crack propagation or dislocation motion. The present paper shows that in the case of a magnesium matrix, interface thermal stresses are relaxed by dislocation motion in ...

2010

Modulus anomaly in magnesium matrix composites

Robert Schaller, Daniele Mari, Abu Salek Md. Fahim Chowdhury

Several magnesium matrix composites were investigated by means of mechanical spectroscopy. A modulus anomaly has been observed in the composites reinforced with fibers while the phenomenon does not occur with particles. This effect is attributed to bonding ...

Wiley2010

Thermal stress relaxation in magnesium matrix composites controlled by dislocation breakaway

Robert Schaller, Daniele Mari, Abu Salek Md. Fahim Chowdhury

In metal matrix composites (MMCs) thermal stress relaxation can be achieved either by interface debonding, crack propagation or by dislocation motion. The present paper shows that in the case of magnesium matrix, interface thermal stresses are relaxed by d ...

2010

Mechanical spectroscopy of interface stress relaxation in magnesium matrix composites

Abu Salek Md. Fahim Chowdhury

Magnesium matrix composites made of pure (99.98%) magnesium reinforced with long carbon (Mg/C) and stainless steel (Mg/steel) fibers were processed by low pressure infiltration method. Mg/C composites were then oriented from the crystallographic point of v ...

EPFL2009

Analysis of transient mechanical loss due to thermal stresses in metal matrix composites

Robert Schaller, Daniele Mari, Abu Salek Md. Fahim Chowdhury

Mechanical spectroscopy has been used to study the thermal stress relaxation at the interfaces in magnesium matrix composites. The mechanical loss spectra measured as a function of temperature show an intrinsic component superimposed on transient damping. ...

2009

Thermal stress relaxation in magnesium matrix composites studied by mechanical spectroscopy

Robert Schaller, Daniele Mari, Abu Salek Md. Fahim Chowdhury

Thermal stress relaxtion at the interfaces in magnesium matrix composite has been studied by mechanical spectroscopy. Two specimens were processed by a gas pressure infiltration method. In one sample, the metallic matrix was unidirectionally oriented with ...

Wiley2008