Responses of Cladonia rangiferina to experimental stress factors.
Cladonia rangiferina resistance to stresses, considering suitable indices for stress response
Daly, O.↗
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The mechanism of stress corrosion cracking in 7075 aluminum.
Stress corrosion cracking model for 7075 Al, correlating macroscopic yield stress and corrosion time to failure
Jacobs, A. J.↗
Stress corrosion cracking evaluation of precipitation-hardening stainless steel
Accelerated test program results show which precipitation hardening stainless steels are resistant to stress corrosion cracking. In certain cases stress corrosion susceptibility was found to be associated with the process procedure.
Humphries, T. S.↗
Increased resistance to stress corrosion of aluminum alloys
Stress corrosion resistance is increased by distorting surface grain-boundary structure and by interrupting the corrosion and stress corrosion. The first is accomplished by machining or shot peening and the second by removal from and later reexposure to the corrosive environment.
Brummer, S. B.↗
The mechanism of stress corrosion cracking in Cu-Al alloys
Stress corrosion cracking in Cu-Al alloys shown dependent on alloy and Cu ion content, solution pH and stress level, discussing tarnish film formation role
Blackwood, A. W.↗
Stress distribution in a bimaterial plate under uniform external loadings
Elastic fields in bimaterial plate under uniform compressive and anti-plane shear loadings, finding stress distribution and induced interfacial shear stresses
Chou, T. W.↗
Yield criteria for plastic deformation on glassy high polymers in general stress fields
Yield criteria for plastic deformation on glassy high polymers induced by stress field, noting crazing and shear yielding dependence on first stress invariant
Ongchin, L.↗
On the determination of stress intensity factors for some common structural problems
Crack tip stress intensity factor in sheet structures, applying complex stress potentials and perturbation techniques in numerical calculations
Isida, M.↗
Instrument accurately measures stress loads in threaded bolts
Interferometric instrument response is linearly related to axial tensile stresses, and, under idealized conditions, measurement errors are within approximately plus or minus 1 percent. Ultimate accuracy of instrument depends on a number of variables, such as bolt material, dimensions, and geometry and uniformity of stresses and temperature.
Rollins, F. R., Jr.↗
Miniature stress transducer Patent
Miniature solid state, direction sensitive, stress transducer design with bonded semiconductive piezoresistive element for sensing residual stresses
San Miguel, A.↗
Analysis of thermal stress and metal movement during welding Final report
Welding thermal and residual stress analysis and material property and weld parameter effects on thermal stresses and elastoplastic deformation of aluminum alloys, steel, niobium, and tantalum
Andrews, J. B.↗
Investigation of stress waves and effects of hypervelocity impact
Stress waves in multiple laminates and sandwich plates, dynamic polariscope for stress wave analysis, meteoroid hazard to space travel, effects of hypervelocity impact, and related studies
Kinslow, R.↗
Stress relaxation as a source of dimensional instability
Stress relaxation as source of dimensional instability in precision devices, discussing thermal cycling role in residual stress relief
Maringer, R. E.↗
Stress distribution in bonded joints
Stress distribution in plates and tubes bonded by stepped joints, assuming generalized plane stress
Erdogan, F.↗
Thermoelastic damping and its effect on flutter of stressed panels situated in a supersonic airflow
The effects of material damping on flutter of stressed rectangular panels are studied within the context of linear thermoelasticity theory. The closed-form expression for the thermoelastic (material) damping coefficient is obtained as a function of frequency, panel temperature and dimensions, and material properties. The solution of the stability boundary value problem is obtained by use of a generalized Galerkin method in the cross stream direction which reduces the governing partial differential equations to a system of ordinary differential equations in the streamwise direction. These equations are then solved exactly. Numerical results are given for the thermoelastic damping coefficients and for the flutter speeds of partially and fully clamped panels subjected to midplane stress.
Shieh, R. C.↗
The role of hydrogen in hot-salt stress corrosion cracking of titanium-aluminum alloys
Additional support is presented for the previously proposed role of hydrogen as an embrittling agent in hot-salt stress corrosion cracking of titanium-aluminum alloys. The main source of hydrogen formed during the reactions of titanium alloys with hot salt was identified as water associated with the salt. Hydrogen is produced by the reaction of an intermediate (hydrogen halide) with the alloy rather than from metal-water reactions. The fracture mode of precracked tensile specimens was ductile when the specimens were tested in air, and brittle when tests were made in high-pressure hydrogen. Stressed titanium-aluminum alloys also were cracked by bombardment with hydrogen ions produced in a proton accelerator. The approximate concentrations of the hydrogen ions in the alloys were calculated.
Ondrejcin, R. S.↗
The effect of alloy composition on the mechanism of stress corrosion cracking of titanium alloys in aqueous environments
Emphasis has been placed on determining the interrelations among the composition, phase structure, deformation, and fracture properties of the alpha phase in susceptible alpha-beta alloys. The program is divided into two parts: (1) evaluation of the aqueous stress corrosion susceptibility of a series of alloys that contain various alpha-soluble elements; and (2) investigations of the metallurgical aspects of the mechanism of aqueous stress corrosion cracking.
Williams, D. N.↗
Effect of initial hydrogen content of a titanium alloy on susceptibility to hot-salt stress-corrosion
The Ti-8Al-1Mo-1V alloy was tested in four conditions: mill annealed (70 ppM H), duplex annealed (70 ppM H), vacuum annealed to an intermediate (36 ppM) and a low (9 ppM H) hydrogen level. Material annealed at 650 C (duplex condition) exhibited resistance to hot-salt stress corrosion superior to that exhibited by material in the mill-annealed condition. Reduction of the alloy hydrogen content from 70 to as low as 9 ppM did not influence resistance to hot-salt stress corrosion embrittlement or cracking.
Gray, H. R.↗