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Related Concept Videos

Types of Stressors01:23

Types of Stressors

A stressor is any event, condition, or stimulus that triggers stress and causes a physical or psychological response in the body. Stressors can be categorized into three main types: catastrophes; significant life changes; and daily hassles, including social stress. Each can be detrimental to physical and mental well-being.
Catastrophes
Catastrophes refer to large-scale, unpredictable events that create overwhelming stress and a sense of threat. Examples include natural disasters like...
Introduction to Stress and Lifestyle01:27

Introduction to Stress and Lifestyle

Stress is a multifaceted response to events perceived as challenging or threatening, highlighting physical, emotional, cognitive, and behavioral reactions. Physically, stress can lead to fatigue, sleep disruptions, and various health issues such as frequent colds, chest pains, and nausea. Emotionally, it can manifest as anxiety, depression, irritability, and anger triggered by both minor and major life events. Cognitively, it may result in difficulty in concentration, memory, and...
Psychological Responses to Stress01:20

Psychological Responses to Stress

Psychological responses to stress encompass the various cognitive and emotional reactions individuals experience when faced with challenging or threatening situations, such as a job loss. Prolonged exposure to stressors can disturb emotional balance, increasing negative emotions (e.g., anxiety and sadness) and diminishing positive emotions (e.g., joy and satisfaction). These persistent emotional shifts are associated with an increased risk of both physical illness and mental health issues, such...
Principal Stresses: Problem Solving01:15

Principal Stresses: Problem Solving

When analyzing two planes intersecting at right angles under the influence of shearing, tensile, and compressive stresses, it is essential to identify principal planes, maximum shearing stress, and principal stresses. To find the principal planes, apply a formula that equates them to twice the shearing stress divided by the difference between tensile and compressive stresses.
Applications of Stress01:04

Applications of Stress

Consider a structure made of a boom and a rod designed to support a load. These two components are connected by a pin and stabilized by brackets and pins. The boom and the rod are detached from their supports to assess the different stresses imposed on this structure, and a free-body diagram is drawn. Then, all the forces applied, including the load acting on the structure, are identified. The reaction forces exerted on both the boom and the rod are computed using the equilibrium equations.
The...
Stress01:20

Stress

When a force is applied on a body, it undergoes deformation. In order to restore the body to its original shape and/or size, an opposite or restoring force is generated within the body. This restoring force is equal to the magnitude of the applied force, but acts in the opposite direction. The amount of this restoring force developed per unit area of the body is called stress. Stress is a tensor quantity and has the SI unit pascal. Stress can be separated into four broad categories depending...

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A Modified Trier Social Stress Test for Vulnerable Mexican American Adolescents
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A Modified Trier Social Stress Test for Vulnerable Mexican American Adolescents

Published on: July 10, 2017

Deviatoric stress: a nuisance or a gold mine?

W A Bassett1

  • 1Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY 14853, USA.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|May 22, 2012
PubMed
Summary
This summary is machine-generated.

Deviatoric stress, once a nuisance in high-pressure studies, is now a valuable tool in X-ray diffraction. Measuring anisotropic elastic strain provides crucial insights into material properties and phase transitions.

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The Social Dimension of Stress: Experimental Manipulations of Social Support and Social Identity in the Trier Social Stress Test
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Area of Science:

  • Materials Science
  • Geophysics
  • Physics

Background:

  • Historically, deviatoric stress and synchrotron radiation were viewed as experimental hindrances.
  • Hydrostatic pressure studies using fluid media are limited to below 11 GPa at ambient temperatures.
  • Noble gases have been employed as pressure media due to their soft solids, extending pressure limits.

Purpose of the Study:

  • To highlight the evolving role of deviatoric stress from a nuisance to a valuable analytical aspect in X-ray diffraction.
  • To emphasize the significance of measuring anisotropic elastic strain under extreme conditions.
  • To showcase the broad applications of deviatoric stress analysis in materials science.

Main Methods:

  • Utilizing X-ray diffraction to measure anisotropic elastic strain in samples under high pressure.
  • Employing synchrotron radiation as a key tool for advanced materials analysis.
  • Investigating materials under extreme conditions, including elevated temperatures and pressures.

Main Results:

  • Deviatoric stress analysis has become essential for accurate determination of elastic properties and crystal structures.
  • Measuring anisotropic elastic strain offers new insights into material strength and lattice preferred orientation.
  • Deviatoric stress analysis aids in understanding phase transitions and slip systems.

Conclusions:

  • Deviatoric stress is now recognized as a valuable source of information in materials science, particularly in high-pressure X-ray diffraction.
  • Anisotropic elastic strain measurements provide critical data for understanding material behavior under extreme conditions.
  • The study underscores the transformative impact of recognizing and measuring deviatoric stress in scientific research.