The clusters are too small to cause the undesirable brittleness, but the strength and lightness of the aluminum remain, the researchers report online today in Nature.
It was thus obvious that the undesirable "pinching effect" and strength deterioration that were attributed to the presence of high shear forces can be eliminated by properly orienting the steel grid in RC elements subjected to cyclic shear.
Randomly distributed surface and subsurface defects cause undesirable variation in the bending strength.
The uncertainty associated with the balance between the desirable and undesirable effects will determine the strength of recommendations.
However, practically, premature failures caused by the stress concentrations near the notch roots can make the test undesirable for determining the shear strength of the hybrid composite.
Unlike the PVA fibers normally used, this low-cost PVA fiber has no surface oil coating and exhibit lower tensile strength, which are undesirable in basis of micromechanics underlying ECC design.
An upper strength limit, over which undesirable side-products appear, was evaluated, and the factors influencing the production of N-methyl amide were analyzed.
Glass network formers, such as zirconia and alumina, are known to provide the glass fibers with higher strength and to slow down undesirable devitrification processes.
Soft soils are not suitable for use in runway and highway construction due to their undesirable characteristics such as poor grading, low strength, and excessive plasticity, tendency to shrink or swell.
Most of these processes, such as ion-beam sputter coating, thermal spraying, and flame spraying, are high temperature line of sight processes, which suffer from undesirable phase formation and weak metal/HAP bonding strength.
