Failure in laminates in tension under increasing stress, constant stress, and cyclic stress

1974 ◽  
Vol 9 (2) ◽  
pp. 201-211 ◽  
Author(s):  
A. S. Argon ◽  
D. G. Bailey
Keyword(s):  
Cyclic Stress ◽  
Constant Stress

scholarly journals Observation of Crack Growth in Granite under Constant Stress and Cyclic Stress.

1995 ◽  
Vol 111 (12) ◽  
pp. 841-847 ◽  
Author(s):  
Jun-ichi KODAMA ◽  
Yoji ISHIJIMA ◽  
Tatsuhiko GOTO
Keyword(s):  
Crack Growth ◽  
Cyclic Stress ◽  
Constant Stress

A Method for Quantifying Creep Strain Due to Cyclic Stress

1974 ◽  
Vol 41 (4) ◽  
pp. 953-958 ◽  
Author(s):  
J. J. Williams ◽  
F. A. Leckie
Keyword(s):  
Creep Strain ◽  
Creep Test ◽  
Cyclic Creep ◽  
Cyclic Stress ◽  
Constant Stress ◽  
Stress Tests ◽  
Creep Strains

A method is proposed for isolating the two constants required to quantify the creep strains caused by cyclic histories of stress. These constants can be determined from the results of a single cyclic creep test together with data from constant stress tests.

Time Dependances of the Resistance Coefficients of Polymeric Materials

INEOS OPEN ◽  
2020 ◽  
Vol 3 ◽  
Author(s):  
A. V. Matseevich ◽  
◽  
A. A. Askadskii ◽  
Keyword(s):  
Time Dependence ◽  
Physical Mechanism ◽  
Polymeric Materials ◽  
Resistance Coefficient ◽  
Constant Stress ◽  
Time To Rupture ◽  
Structure Sensitive ◽  
Material Durability ◽  
Resistance Coefficients ◽  
Extremal Character

One of the possible approaches to the analysis of a physical mechanism of time dependence for the resistance coefficients of materials is suggested. The material durability at the constant stress is described using the Zhurkov and Gul' equations and the durability at the alternating stress—using the Bailey criterion. The low strains lead to structuring of a material that is reflected in a reduction of the structure-sensitive coefficient in these equations. This affords 20% increase in the durability. The dependence of the resistance coefficient assumes an extremal character; the maximum is observed at the time to rupture lg tr ≈ 2 (s).

An Inquiry into Unionizing Home Healthcare Workers: Benefits for Workers and Patients

2003 ◽  
Vol 29 (1) ◽  
pp. 117-138
Author(s):  
Kristin Jenkins Gerrick
Keyword(s):  
Health Insurance ◽  
Chest Pain ◽  
Healthcare Worker ◽  
Healthcare Workers ◽  
Constant Stress ◽  
Home Healthcare ◽  
Client Needs

Susan Carter has not been feeling well for days. She would like to see a doctor about her chest pain and wheezing, but Susan knows that missing work will leave her client without a replacement and, worse, she could be fired. Susan is a home healthcare worker in Illinois. Like many of her fellow workers, Susan has no health insurance and cannot afford to risk losing her job by going to see a doctor.Often, Susan feels unable to handle the constant stress of her job. She helps her clients bathe and dress, prepares their meals and assists them with their medications and housekeeping. Susan travels by bus daily to care for two to five clients. She carries a pager day and night in case a client needs help with a plugged catheter or another emergency. Susan often has to work seven days a week, and she steps in to care for patients whose caregivers have left for better-paying jobs.

Rate Dependent Constitutive Equations of Cyclic Softening

1985 ◽  
Vol 40 (7) ◽  
pp. 653-665
Author(s):  
J. S. Mshana ◽  
A. S. Krausz
Keyword(s):  
Stress Relaxation ◽  
Low Temperature ◽  
Constitutive Equations ◽  
Strain Softening ◽  
Structural Characteristics ◽  
High Stress ◽  
Cyclic Strain ◽  
Cyclic Stress ◽  
Cyclic Softening ◽  
Stress Softening

Constitutive equations of cyclic strain and stress softening for materials with low internal stress levels are derived from the rate theory. The study shows that over the high stress and low temperature range where the description of plastic flow in cyclic softening can be approximated with activation over a single energy barrier, cyclic strain softening is well related to stress relaxation process while cyclic stress softening is related to creep process. The material structural characteristics for cyclic strain softening, cyclic stress softening and stress relaxation are identical. Subsequently, it is shown that cyclic stress and strain softening within the high stress and low temperature range can be evaluated from the constitutive equations using the material structural characteristics measured from a simple stress relaxation test.

Post-liquefaction pore pressure dissipation in sand under cyclic stress triaxial testing

Géotechnique ◽  
2020 ◽  
Vol 70 (2) ◽  
pp. 95-107
Author(s):  
Saizhao Du ◽  
Siau Chen Chian ◽  
Changbing Qin
Keyword(s):  
Pore Pressure ◽  
Cyclic Stress ◽  
Triaxial Testing
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