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Tensile Test Report

Graphical Analysis

and

Computational Results

of Collected Data

Tensile Report Layout

Your Tensile report will include 10 pages which will contain the following information:

• Title page• Statistical Process Control Data collected from tensile data• Proportional Strength - Definition-graph-calculation• Yield Strength - Definition-graph-calculation• Tensile or Ultimate Strength - Definition-graph-calculation• Breaking/Rupture Strength - Definition-graph-calculation• Modulus of Elasticity - Definition-graph-calculation• Modulus of Resilience - Definition-graph-calculation• Modulus of Toughness - Definition-graph-calculation• Calculations Page - data not needing graphical representation

Title Page

• Major Topic Heading

•Course Name

•Topic of Paper

•Student Name

•Instructor

•Date

•Period

Material and MaterialsTesting in Engineering

Principles of EngineeringUnit 6

Destructive Tensile Testof

Aluminum

John Vielkind-NeunInstructor: Mr. Smith

May 17, 2000Period 6

Statistical Process Control Data

• Cut SPC data sheet into sections and glue to titled page

• Break information into appropriate sections.

e.g. Recorded Data

Results

Histogram

Statistical Process Control Aluminum Data

Proportional Limit StressProportional Limit - The greatest stress a material is capable of withstanding without deviation from a straight -line proportionality between stress and strain. If the force applied to the material is released the material will return to it’s original shape and size.

Calculation

S = F / A

Graph

Strain () in/in

Stre

ss (

S) p

si

Proportional/ Elastic Limit

Yield Point StressYield point - The point at which a sudden elongation takes place, while the load on the sample remains the same or actually drops. If the force applied to the material is released the material will not return to it’s original shape and size.

Calculation

S = F / AGraph

Strain () in/in

Str

ess

(S)

psi

Yield Point

Ultimate or Tensile StressUltimate Strength - The point at which the maximum load for a sample is achieved. Beyond this point, elongation of the sample continues but the force being exerted decreases.

Calculation

S = F / A

Graph

Strain () in/in

Stre

ss (

S) p

si

Ultimate Strength

Breaking/Rupture StressBreaking/Rupture Stress - The maximum amount of stress that can be applied before rupture occurs. The material fractures in the necking region where the material reduces in diameter as the material elongates.

Calculation

S = F / AGraph

Strain () in/in

Stre

ss (

S) p

si

Rupture Point

Necking Region

Modulus of ElasticityModulus of Elasticity -A measure of a materials ability to regain its original dimensions after the removal of a load or force. The modulus is the slope of the straight line portion of the stress-strain diagram up to the proportional limit.

Calculation

E = (F1 -F2)Lo / (1 - 2)AGraph

Strain () in/in

Stre

ss (

S) p

si

Proportional / Elastic Limit

Slope

Strain () in/in

Stre

ss (

S) p

si

Elastic Region

Modulus of ResilienceModulus of Resilience -A measure of a materials ability to absorb energy up to the elastic limit. This modulus is represented by the area under the stress versus strain curve from zero force to the elastic limit.

Calculation

Ur = 1/2 (yp)( yp)

Graph

Elastic Limit

Modulus of ToughnessModulus of Toughness -A measure of a materials ability to plastically deform without fracturing. Work is performed by the material absorbing energy by the blow or deformation. This measurement is equal to the area under the stress versus strain curve from its origin through the rupture point.

Graph

Strain () in/in

Str

ess

(S)

psi

Plastic Region

Calculation:

Ut = 1/3(Br) (yp + 2ult)

Calculation Page

Total Strain/ Deformation -The total amount of elongation of a sample to rupture normalized(divided by) by the initial length.Calculation: total = total/Lo

Ductility:The ability of a material to be deformed plastically without rupture.Calculation: % Elongation = total(100)

Ductility:The ability of a material to be deformed plastically without rupture.Calculations: % Reduction in area = Aoriginal - A final / A original (100)