digplanet beta 1: Athena
Share digplanet:

Agriculture

Applied sciences

Arts

Belief

Chronology

Culture

Education

Environment

Geography

Health

History

Humanities

Language

Law

Life

Mathematics

Nature

People

Politics

Science

Society

Technology

In engineering, shear strength is the strength of a material or component against the type of yield or structural failure where the material or component fails in shear. A shear load is a force that tends to produce a sliding failure on a material along a plane that is parallel to the direction of the force. When a paper is cut with scissors, the paper fails in shear.

In structural and mechanical engineering the shear strength of a component is important for designing the dimensions and materials to be used for the manufacture/construction of the component (e.g. beams, plates, or bolts) In a reinforced concrete beam, the main purpose of stirrups are to increase the shear strength.

For shear stress $\tau$ applies

$\tau = \frac {\sigma_1 - \sigma_3}{2} ,$

where

$\sigma_1$ is major principal stress
$\sigma_3$ is minor principal stress

In general: ductile materials (e.g. aluminium) fail in shear, whereas brittle materials (e.g. cast iron) fail in tension. See tensile strength.

To calculate:

Given total force at failure (F) and the force-resisting area (e.g. the cross-section of a bolt loaded in shear), Ultimate Shear Strength ($\tau$) is:

$\tau = \frac {F}{A} = \frac {F}{\pi r_{bolt}^2} = \frac {4F}{\pi d_{bolt}^2}$

As a very rough guide:[1]

Material Ultimate Strength Relationship Yield Strength Relationship
Steels USS = approx. 0.6*UTS SYS = approx. 0.58*TYS
Ductile Iron USS = approx. 0.9*UTS SYS = approx. 0.75*TYS
Malleable Iron USS = approx. 1.0*UTS
Wrought Iron USS = approx. 0.83*UTS
Cast Iron USS = approx. 1.3*UTS
Aluminiums USS = approx. 0.65*UTS SYS = approx. 0.55*TYS

USS: Ultimate Shear Strength, UTS: Ultimate Tensile Strength, SYS: Shear Yield Stress, TYS: Tensile Yield Stress

Material Ultimate stress (Ksi) Ultimate stress (MPa)
Fiberglass/epoxy (23 o C)[2] 7.82 2.6

When values measured from physical samples are desired, a number of testing standards are available, covering different material categories and testing conditions. In the US, ASTM standards for measuring shear strength include ASTM B831, D732, D4255, D5379, and D7078. Internationally, ISO testing standards for shear strength include ISO 3597, 12579, and 14130.[3]

## References

1. ^ http://www.roymech.co.uk/Useful_Tables/Matter/shear_tensile.htm
2. ^ Watson, DC (May 1982). Mechanical Properties of E293/1581 Fiberglass-Epoxy Composite and of Several Adhesive Systems (Technical report). Wright-Patterson Air Force, Ohio: Air Force Wright Aeronautical Laboratories. p. 16. Retrieved 24 October 2013.
3. ^ S. Grynko, "Material Properties Explained" (2012), ISBN 1-4700-7991-7, p. 38.

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Shear_strength — Please support Wikipedia.
 207988 videos foundNext >
 Strength of Materials - Shear Stress - Example 1In this example I explain the very basic concept of Shear Stress. Shear strength of soil - part 1The first of two videos on shear strength suitable for an introductory module in geomechanics. Testing Shear Strength of Spaghetti Adhesive Lap Joint Shear Strength Test - Simialr to ASTM D1002This video shows an adhesive lap joint shear strength test similar to ASTM D1002 Read a lot more about this test here: http://info.admet.com/specifications/b... The Spectacular Spider-Man - Season 2 - Shear Strength - FULL EPİSODEThe Spectacular Spider-Man FULL EPİSODE the spectacular spider man intro the spectacular spider man gwen stacy died the spectacular spider man venom the spec... Soil Strength: Drained and Undrained Shear Strength4.4 - Drained and Undrained Shear Strength [Video 9 of 12] Videos designed and presented by Declan Phillips PhD P.E. and Alan O Reilly BEng and the generous ... Carleton University - CIVE 3208 Lab 6: Direct Shear TestAbout the shear box apparatus -Which soil to use -How to assemble the shear box -How to perform the experiment (motor speed, strain gauges, setup the softwa... Shear strength test for butterThere are wide selections of butter and margarine based on consumers' needs, such as smoothness, softness, low fat, reduced calorie, and so on. Product devel... The Spectacular Spider Man Season 2 Episode 4 Shear Strength FULL EPİSODEThe Spectacular Spider-Man FULL EPİSODE the spectacular spider man intro the spectacular spider man gwen stacy died the spectacular spider man venom the spec... Soil Strength: Basic Introduction to Strength4.1 - Basic Introduction to Strength [Video 6 of 12] Videos designed and presented by Declan Phillips PhD P.E. and Alan O Reilly BEng and the generous suppor...
 207988 videos foundNext >
 572 news items
 Rookie report: 49ers' Chris Borland a convenient Bowman-Willis mix SportingNews.com Tue, 18 Nov 2014 13:45:00 -0800 While Borland doesn't have great size or bulk, he does a fantastic job in attacking his block, staying low and playing with great leverage, which forces interior offensive lineman to win with feet rather than shear strength. It doesn't get reflected on ... Mountain Xpress Daydreamer on Biltmore: New mural unveiled Mountain Xpress Fri, 07 Nov 2014 11:07:03 -0800 “Even when we tested the work with no metal fastener at all — just the tile, epoxy and the cinder block — we never found the shear strength,” Wilkinson says. “The cinder block would always break first.” The bond, meanwhile surpassed 7,000 pounds of ... Business Wire India (press release) Henkel Loctite Benzoxazine Composites: Elevating Aerospace Prepreg ... Business Wire India (press release) Wed, 12 Nov 2014 16:56:15 -0800 When subject to thermal analysis over one year, BZ prepreg formulas demonstrate minimal change in differential scanning calorimetry (DSC) characteristics at room temperature. They also maintain their interlaminate shear strength (ILSS) after 12 months ... Regular drill can be used to install porch railing Las Vegas Review-Journal Sat, 25 Oct 2014 06:07:30 -0700 Depending upon how deep you embed them into the concrete, these anchors can withstand pullout in excess of 1,800 pounds with a shear strength of more than 1,600 pounds. Now that's slick. Mike Klimek is a licensed contractor and owner of Las Vegas ... Innovative Composite Pallet Gains Strength and Durability from Pultruded Bayer ... NETCOMPOSITES Tue, 28 Oct 2014 09:07:30 -0700 Specially designed for use in pultrusion, Bayer's Baydur PUL 2500 resin is a two-component polyurethane system that offers excellent composite properties, including superior elongation to failure characteristics, greater shear strength and higher ... High Performance Composites The democratization of carbon fiber High Performance Composites Fri, 31 Oct 2014 20:11:15 -0700 Today's tensile strengths are only a fraction of what is theoretically possible, but the main design drivers in aerospace design are not tensile strength and stiffness, but compression and shear strength, where the major advancements need to be made. Science Times An Urban Legend or Possible Truth? Amelia Earhart May Have Been Eaten Alive Science Times Fri, 31 Oct 2014 12:23:12 -0700 Since her disappearance on July 2, 1937, many have questioned the final hours of pilot Amelia Earhart's life. Was she lost at sea when her plane disappeared over the South Pacific? Or did she go down with her plane? While many feared the worst, urban ... Sensor Control has its successful automatic sand testing system SPC ... Foundry-Planet.com Mon, 03 Nov 2014 05:41:15 -0800 Up to now could in the green sand preparation in the used sand the parameters residual moisture, temperature, bulk density and batch weight and in the prepared sand the variables compactibility, compression strength, shear strength, moisture and ...
 Limit to books that you can completely read online Include partial books (book previews) .gsc-branding { display:block; }

Oops, we seem to be having trouble contacting Twitter