Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Fatigue01:21

Fatigue

759
Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...
759
Behavior of Concrete Under Compressive Load01:23

Behavior of Concrete Under Compressive Load

505
Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...
505
Fatigue Strength of Concrete01:22

Fatigue Strength of Concrete

472
Fatigue, in the context of materials science and engineering, refers to the weakening or failure of a material caused by repeatedly applied loads, even if these loads are below the strength limit of the material. Fatigue strength in concrete is a critical property that influences its durability and longevity. Concrete can fail in two ways due to fatigue. Static fatigue or creep rupture occurs under a constant load or one that increases slowly. The other failure mode is due to cyclical or...
472
Stresses under Combined Loadings01:23

Stresses under Combined Loadings

390
When analyzing a bent tube with a circular cross-section subjected to multiple forces, it is crucial to determine the stress distribution in order to maintain structural integrity under varied load conditions.
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
390
Plastic Behavior01:21

Plastic Behavior

461
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
461
Bending of Members Made of Several Materials01:11

Bending of Members Made of Several Materials

502
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
502

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The cool brown dwarf Gliese 229 B is a close binary.

Nature·2024
Same author

CAnceR IN PreGnancy (CARING) - a retrospective study of cancer diagnosed during pregnancy in the United Kingdom.

British journal of cancer·2024
Same author

Pediatric oncofertility care in limited versus optimum resource settings: results from 39 surveyed centers in Repro-Can-OPEN Study Part I & II.

Journal of assisted reproduction and genetics·2022
Same author

The Current Use of Lumbar Puncture in a General Paediatric Unit.

Irish medical journal·2022
Same author

Installing oncofertility programs for common cancers in limited resource settings (Repro-Can-OPEN Study): An extrapolation during the global crisis of Coronavirus (COVID-19) pandemic.

Journal of assisted reproduction and genetics·2020
Same author

Adult attachment insecurity and associations with diabetes distress, daily stressful events and self-management in type 1 diabetes.

Journal of behavioral medicine·2019
Same journal

The Photochemistry of Propane at High Photon Energies (8.4-21.2 eV).

Journal of research of the National Bureau of Standards. Section A, Physics and chemistry·2021
Same journal

Isomerization Processes in Ions of the Empirical Formula <math> </math>.

Journal of research of the National Bureau of Standards. Section A, Physics and chemistry·2021
Same journal

Temperature Dependence of Photocurrents Produced by X and Gamma Rays in Silicon Radiation Detectors.

Journal of research of the National Bureau of Standards. Section A, Physics and chemistry·2021
Same journal

Stable Radical-Anions Derived from Glyoxal <i>Bis</i>(phenylhydrazones).

Journal of research of the National Bureau of Standards. Section A, Physics and chemistry·2021
Same journal

High-Speed (Subsecond) Measurement of Heat Capacity, Electrical Resistivity, and Thermal Radiation Properties of Niobium in the Range 1500 to 2700 K.

Journal of research of the National Bureau of Standards. Section A, Physics and chemistry·2021
Same journal

A New Determination of the Atomic Weight of Zinc.

Journal of research of the National Bureau of Standards. Section A, Physics and chemistry·2021
See all related articles

Related Experiment Video

Updated: Dec 26, 2025

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates
07:53

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates

Published on: April 27, 2019

8.6K

Compressive Fatigue Coaxing in Composites.

C A Berg1, M Salama1

  • 1Institute for Basic Standards, National Bureau of Standards, Washington, D.C. 20234.

Journal of Research of the National Bureau of Standards. Section A, Physics and Chemistry
|March 20, 2020
PubMed
Summary
This summary is machine-generated.

Compressive fatigue in fiber reinforced composites causes damage transverse to fibers. Pre-fatiguing at low stress levels, known as coaxing, significantly extends fatigue life at higher stresses, unlike cumulative damage effects.

Keywords:
Coaxingcompositescompressive fatiguefatigue

More Related Videos

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process
09:54

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Published on: June 30, 2023

2.9K
Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes
11:05

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Published on: December 13, 2016

12.6K

Related Experiment Videos

Last Updated: Dec 26, 2025

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates
07:53

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates

Published on: April 27, 2019

8.6K
Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process
09:54

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Published on: June 30, 2023

2.9K
Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes
11:05

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Published on: December 13, 2016

12.6K

Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Composite Materials

Background:

  • Compressive fatigue is a critical failure mode in fiber reinforced composites.
  • Understanding damage mechanisms is essential for predicting material lifespan.
  • Existing research often focuses on cumulative damage, particularly in tensile fatigue.

Purpose of the Study:

  • To investigate compressive fatigue behavior in unidirectional fiberglass and graphite fiber composites.
  • To identify the primary damage mechanism under compressive fatigue.
  • To explore the phenomenon of 'coaxing' and its effect on fatigue life.

Main Methods:

  • Unidirectional fiberglass and graphite fiber composites were subjected to compressive fatigue experiments.
  • Specimens were tested under varying stress levels, including initial low-stress cycling followed by high-stress cycling.
  • Microscopic analysis was used to observe crack propagation and damage formation.

Main Results:

  • Compressive fatigue damage initiates as crack extension directly transverse to the fibers.
  • Specimens pre-conditioned with low-stress fatigue cycles exhibited significantly longer fatigue lives at high stress levels (up to a five-fold increase).
  • This 'coaxing' effect contrasts with typical cumulative damage phenomena observed in tensile fatigue.

Conclusions:

  • The study identifies a unique 'coaxing' phenomenon in compressive fatigue of composites.
  • A potential mechanism for coaxing under compressive loading is proposed.
  • The findings suggest practical applications for enhancing the durability of composite structures under compressive fatigue loading.