3. 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
4. Title Page
• Major Topic Heading
•Course Name
•Topic of Paper
•Student Name
•Instructor
•Date
•Period
Material and Materials
Testing in Engineering
Principles of Engineering
Unit 6
Destructive Tensile Test
of
Aluminum
John Vielkind-Neun
Instructor: Mr. Smith
May 17, 2000
Period 6
5. 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
6. Proportional Limit Stress
Proportional 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
Stress(S)psi
Proportional/ Elastic Limit
7. Yield Point Stress
Yield 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
Stress(S)psi
Yield Point
8. Ultimate or Tensile Stress
Ultimate 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
Stress(S)psi
Ultimate Strength
9. Breaking/Rupture Stress
Breaking/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 / A
Graph
Strain (∈) in/in
Stress(S)psi
Rupture Point
Necking Region
10. Modulus of Elasticity
Modulus 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 / (δ1 -δ 2)A
Graph
Strain (∈) in/in
Stress(S)psi
Proportional / Elastic Limit
Slope
11. Strain (∈) in/in
Stress(S)psi
Elastic Region
Modulus of Resilience
Modulus 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 (σyp)(ε yp)
Graph
Elastic Limit
12. Modulus of Toughness
Modulus 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
Stress(S)psi
Plastic Region
Calculation:
Ut = 1/3(εBr) (σyp + 2σult)
13. Calculation Page
Total Strain/ Deformation -The total amount of
elongation of a sample to rupture
normalized(divided by) by the initial length.
Calculation: εtotal = δtotal/Lo
Ductility:The ability of a material to be deformed
plastically without rupture.
Calculation: % Elongation = ε total(100)
Ductility:The ability of a material to be deformed
plastically without rupture.
Calculations:
% Reduction in area = Aoriginal - A final / A original (100)
