Deformation-under-load

The use of light scattering and X-ray beams to measure defoimadon has been reported by Lee and coworkers [58] and Reikel and coworkers [59]. 

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The rigidity of a polymer is determined by the ease with which polymer molecules are deformed under load. In a polymer at -273°C all load is taken by... 

Volume deformations under drying conditions It is under conditions where moisture is lost from concrete that volume deformations under loaded or unloaded conditions occur to any magnitude. It is difficult to say what degree of relative humidity structural concrete will be subjected to in actual practice, but certainly for thin sections or near the surface of large sections, considerable interchange of water due to changing climatic conditions will occur. 

Refractory No. Fusion Point Deformation under Load (% at °F and Ib/in.) Spalling, Resistance Repeat Shrinkage after 5 hr (% °F) WL of Straight 9 in. Brick (lb) ... 

Plasticity measurement results can be obtained by determining the maximum depth of plastic deformation under load Ry indentation diag-... 

Creep, Stress Relaxation, Elastic Recovery. Olefin fibers exhibit creep, or time-dependent deformation under load, and undergo stress relaxation, or the spontaneous relief of internal stress. High molecular weight and high orientation reduce creep. 

The basic design needs to be confirmed by the customer. Does the proposed part actually look like what is required, and will it fit into the rest of the equipment if it is part of a larger assembly If not previously discussed with the supplier, any potential trouble points like sharp corners or butt joints should be brought to the attention of the customer and the potential problems resolved. If the part is a noncritical item or if there is knowledge available from previous similar items, the part can be evaluated by the customer. Flexibility, deformation under load, and correct functioning in an assembly can be verified using the part. 

The most remarkable difference between PTFE and PFA is the considerably lower resistance to deformation under load (cold flow) of the latter. In fact, addition of even minute amounts of PFA to PTFE improves its resistance to cold flow52 (see also Section 8.7). 

The ability of a material to deform under loads and to return to its original dimensions upon removal of the load. 

Thermoplastic. Capable of plastic flow or permanent deformation under load when heated capable of softening repeatedly upon wanning. 

Fig. 13 Punch tip edges wear and deformation under load, effect on tablet shape and tip deflection.

Modulus of Elasticity. The MOE quantifies a material s resistance to deformation under load. The MOE corresponds to the slope of the linear portion of the stress-strain relationship from zero to the proportional limit (Figure 6). Stiffness is often incorrectly thought to be synonymous with MOE. However, MOE is solely a material property and stiffness depends on the size of the beam. Large and small beams of similar material would have similar MOEs but different stiffnesses. The MOE can be calculated from the stress-strain curve as the change in stress causing a corresponding change in strain. 

The nature of the refractoriness test implies that the temperature at which the given refractory can be used in operation is always lower. In service, the refractory must neither soften nor deform under load. The latter property has to be tested separately (see below) since it is not related to the former. For example, commercially manufactured magnesite refractories have a refractoriness in excess of 2000 °C, but may deform under load from 1500 °C upwards. On the other hand, a mullite... 

Thermophysical behaviour strength, deformation under load, resistance to thermal shock, resistance to abrasion. 

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