Sensitivity to mechanical deformation

Capturing Effects of Local Mechanical Impact on Homogeneous BZ Cels 

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Baroreceptors are stretch receptors in the arterial portion of the cardiovascular system, specifically in the carotid region and in the aortic arch. They monitor (sense) hydrostatic pressure through specialized nerve endings that are sensitive to mechanical deformation of the blood vessel wall. Nerve impulses over these afferent fibers to the central nervous system increase whenever the arterial pressure in the vicinity of the baroreceptors increases. This inhibits outflow of sympathetic impulses, reducing vasomotor tone and decreasing the heart rate. Thus vasoconstrictor tone and cardiac output are reduced as a result of the initial pressure increase that caused these series of events to occur. Both factors tend to return the pressure to previous, lower levels. 

Results of speed of burning of solid fuels, with various content of the catalysts, indicate that FK-IG surpasses considerably in its catalytic efficiency the standard catalyst and plasticizer type of DBF. In addition, the introduction of FK-IG improves strength (Op) and deformation (Cp) specification of fuels. Bxplosive risk and sensitivity to mechanical impacts (to the blow and friction) of fuels with catalyst FK-IG is on the level of standard of fuels with catalyst-softener DBF. 

A very important advantage of FBG sensors is that they are wavelength encoded. Shifts in the spectrum, seen as a narrow-band reflection or dip in transmission, are independent of the optical intensity and uniquely associated with each FBG, provided no overlap occurs in each sensor stop-band. FBG sensors have achieved significant applications in monitoring or inspecting the mechanical or temperature response in smart materials and structures. Most of these applications focus on the axial deformation (or strain) and temperature measurements, because the sensitivities to axial deformation and temperature are much higher than those to other modes of deformation. 

The overriding concern with regard to the mechanical performance of ceramics is their brittieness and hence sensitivity to flaws. There is usually htfle or no warning that failure is imminent because deformation strain prior to failure is usually less than 0.1%. As a result, a primary thmst of stmctural ceramics research has been the development of tougher ceramics. Ceramics now exist that have toughness values of 20 and strengths that... 

In general, the use of FE signals accompanying the deformation and fracture of composites offer elucidation of failure mechanisms and details of the sequence of events leading upto catastrophic failure. The extent of interfacial failure and fiber pull-out are also potential parameters that can be determined. FE can assist in the interpretation of AE and also provide an independent probe of the micro-events occurring prior to failure. FE has been shown to be sensitive to the locus of fracture and efforts are underway to relate emission intensity to fracture mechanics parameters such as fracture toughness (Gjp). Considerable work still remains to fully utilize FE to study the early stages or fracture and failure modes in composites. 

Impurities, such as grit, shreds of cotton, even in small quantities, sensitize an expl to frictional impact. That is why utmost cleanliness must be exercised in the preparation of expls. There are differences in the sensitivity of azides to mechanical and thermal influences. They have been correlated with the structure of the outer electronic orbits, the electrochemical potential, the ionization energy and the arrangement of atoms within the crystal. Functions of the polarizability of the cation are the plastic deformability of the crystals, and their surface properties. The nature of cation in an azide, such as Pb(Nj)2, has little effect on the energy released by the decomposition, which is vested in the N ion. The high heat of formation of the N2 molecule accounts... 

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