"They'll bleat and baa, dona like goats, Gorge down black sheep, and
strain at motes, Array their backs in fine black coats, Then seize their negroes by their throats, And choke, for heavenly union.
Narrative of the Life of Frederick Douglass An American Slave
The researchers divided the subjects into four groups: people with low job
strain at both the times; people with high job
strain at both times; people with low job
strain at the first time and high job
strain at the second; and people who initially had high job strain and then reported low job strain.
Job stress tied to depression
All experiments were conducted under constant stress with symmetrical cyclic controlled shear strain at room temperature.
An experimental study was carried out on multiaxial ratcheting behavior of vulcanized natural rubber under constant axial stress with cyclic controlled shear strain at room temperature.
Experimental study on multiaxial ratcheting behavior of vulcanized natural rubber
When one compresses an elastomer to a given
strain at room temperature, the initial load will depend on the rate at which it is compressed, after which the load will decrease over time to an equilibrium elastic load.
Compression set vs. compression stress relaxation
Automated electron backscatter diffraction measurements have revealed both the extent of the elastic strain field in the neighborhood of an oxide growth front as well as the magnitude of elastic
strain at any position in that field.
NIST develops methods for elastic strain field mapping in semiconductor heterostructures. (General Developments)
However, all nine rats that received large doses of one live Lactobacillus fermentum
strain at the wound site during surgery remained free of the pathogen.
Germs that do a body good: bacteria might someday keep the doctor away. (Cover Story)
In order to relate the elastic effect, to the strain and strain rate, a derivative parameter is introduced, being the elastic fraction, EF, of the local strain at break.
At strains above the yield point, the curve is calculated assuming that he elastic strain during plastic deformation is constant and equals the strain at the yield point, or [[epsilon].sub.i,e] = [[epsion].sub.y].
Elasticity at large deformations and high strain rates in injection molded polypropylene
In such a case, the stress-strain relation can be inverted and
strain at time t is characterized by:
Monitoring the degradation in shear and bulk moduli of rubber for inclusion in visco-elastic FE models
These curves illustrate the danger of drawing conclusions based only on the values of S-300, tensile strength and
strain at break.
Physical properties and their meaning
mean
strain at three strain widths of 3%, 5%, and 7%, respectively, at different numbers of cycles.
Effect of mean strain on the cyclic deformation and stress relaxation in polypropylene
This shows a strong relation between the
strain at failure of an elastomer and an increase in the A/I ratio.
Crosslinking structure and properties of poly(urethane-urea) elastomers
[epsilon] = [sigma]/E ([1-e.sup.-t/[tau]) where: t = time; [tau] = relaxation time; [epsilon] = the
strain at any given time
Dynamic properties of rubber
Failures are often related to high amplitude
strain at resonance, and seldom related to high amplitude inputs at frequencies well removed from the isolator natural frequency.
Understanding strain sensitivity effects in vibration isolators