Experiment #8 Shear Test on Metal Fastners
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Met 225
Shear Test of Metal Fasteners November 20
th
,2023
Aaliyah Ashley aashl009@odu.edu
Shear Test of Metal Fasteners Objectives: The objective of this experiment is to perform a shear test on steel bolt fasteners in both
single and double shear. To determine the shearing stress on all the fasteners in each test preformed. Determine the bearing stress behind each bolt on each plate in each test performed. Determine the normal stress at the critical sections for all the plates pulled in each test performed.
Theory:
The theory behind the experiment is to focus on the strength of fasteners in single and double shear connection. The strength of connection plates is stronger when compared to the strength of the fasteners.
Equations:
T
=
P
nA
T
=
P
2
nA
Description of Apparatus: Bolted connection-Single Shear This was for single shear and the bolt, washers, nuts are holding the flat bars in place before getting placed into the machine.
Bolted connection- Double shear This was double shear flat plates were added and more bolts and fasters.
Universal Testing Machine
This is 60k Super “L” that was to test single and double shear. It is white has a knob to tighten the piece in the machine. Adjustable Wrench
The adjustable wrench was used to tighten the fasteners and nuts into the flat heads and bars . The wrench could be adjusted to how big or small the nut is.
Hex Head fasteners and nuts These were used to get the shear from when put into the fastners.
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Related Questions
9:00
blai 3 If the original specimen length is 76 (b)
mm, what is the maximum length to
which it may be stretched without
?causing plastic deformation
إجابتك
bläi 4 A cylindrical specimen of a nickel alloy
having an elastic modulus of 207 GPa
and an original diameter of 10.2 mm
will experience only elastic
deformation when a tensile load of
8900 N is applied. Compute the
maximum length of the specimen
before deformation if the maximum
.allowable elongation is O.25 mm
إجابتك
Select the valid answer(s)
نقطة واحدة
:Metals .ying-ability is due to
arrow_forward
10. A standard steel specimen of 0.504" diameter elongated 0.0125" in an 8" gage length during a test where it was subjected
to a tensile force of 6249 lb. If the specimen's gage length was measured to be 8.0025" after the test was over, what was the
permanent plastic deformation? What is the elastic deformation and what is the modulus of elasticity of that metal?
r PL
AE
arrow_forward
Question 2
In designing prosthetic sockets, the latter will need to be experimentally tested for their
structural integrity. Figure 2 shows one such design of a prosthetic socket which is made of
carbon fibre composite. Strain gauges are installed to record the strains at various locations of
the legs during walking and the readings are recorded using a telemetry system to detemine
the critical stressed area. At a particular strain gauge location indicated in Figure 2, the
readings recorded by one of the 45° strain gauge rosettes are:
Ea = 2500 x 10*, es = 1500 x 10°, & = -950 x 10*
Using Mohr's Cicle or otherwise, detemine:
(a) the principal strains and the direction of the maximum principal strain relative to
the gauge "a".
(b) the corresponding principal stresses and sketch the results on a properly oriented
element.
You may assume that the prosthetic socket is made of polypropylene whose Young's
modulus of 1.0 GPa and Poisson ratio of 0.3.
Figure 2
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Flag question
You have been given the following test sample data following mechanical testing of 15 test pieces of a modified Alumina.
What is the Weibull modulus of this material?
Would you advise the use of this material over one with a Weibull Modulus of 19.6 and a mean failure stress of 270 MPa, if you
anticipate that the peak stress on the material could be 255 MPa?
Sample
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Select one or more:
Failure Stress (MPa)
297
293
270
300
260
286
265
295
4
293
280
288
263
290
298
275
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At higher temperature, strength and strain hardening are increased,
whereas, ductility is decreased which permits greater plastic
deformation
True
False O
Saaly i
The strength constant (C) is increased with increasing of temperature
True O
False O
The metal is becoming weaker as strain increases, this is because of
.strain hardening (work hardening) property
True O
False O
ly
The engineering stress and strain are defined relative to the
instantaneous area and length of test specimen
True O
False O
In sheetmetal working processes, the surface area-to-volume ratio of
.w.p. is low
True O
False O
aly ihi Determine the value of the strain-hardening exponent for a metal that will
cause the average flow stress to be 70% of the final flow stress after
deformation
0.444
0.421
0.422
0.428
aaly i
For pure copper (annealed), the strength coefficient = 330 MPa and
strain-hardening exponent = 0.52 in the flow curve equation. Determine
the average flow stress that the metal experiences if it is…
arrow_forward
10. The following results were obtained in a tensile test on a mild steel specimen of original diameter
20 mm and gauge length 40 mm.
Load at limit of proportionality
80 kN
Extension at 80 kN load
0.048 mm
Load at yield point
85 kN
Maximum load
150 kN
When the two parts were fitted together after being broken, the length between gauge length was
found to be 55.6 mm and the diameter at the neck was 15.8 mm.
Calculate Young's modulus, yield stress, ultimate tensile stress, percentage elongation and percentage
[Ans. 213 kN/mm2; 270 N/mm²; 478 N/mm²; 39%; 38%]
reduction in area.
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Select one or more:
a. 28.6
Ob. 22.8
O c. 3.7
Od. No
Oe. 4.9
Of. Yes
0
8
9
10
11
12
13
14
15
g.
18.5
295
293
280
288
263
290
298
275
arrow_forward
QUESTION
The following data were obtained during a tension test of a low carbon steel specimen
having a gauge length of 100 mm.
At the point where the stress strain curve deviated from linearity, the load was 35KN, the
gauge length was 102.5 mm and the diameter of the specimen was 1.6 mm. Before necking
began, loads of 45 KN and 55 KN produced gauge lengths of 103.4 mm and 107.7 mm
respectively.
Calculate
(a) The Modulus of elasticity
(b) The Strainhardening exponent
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02: A steel specimen 12mm diameter has gauge length 50mm. the steel specimen
had tested via tensile test under maximum load 66KN with elongation 7.5mm,
and the yield load of this specimen is 15KN with elongation 2.4mm. Calculate:
1- The engineering ultimate stress (ultimate tensile strength), and engineering
strain at this point.
2- The engineering stress and strain at yield point.
3- The modulus of elasticity, and the modulus of resilience.
4- The final or fracture strain of a steel specimen, if you know that the final length
of specimen after testing is 58.5mm.
5- The true stress and strain for ultimate point.
arrow_forward
A tensile test was performed on a metal specimen with a diameter of
1/2 inch and a gage length (the length over which the elongation is meas-
ured) of 4 inches. The data were plotted on a load-displacement graph,
P vs. AL. A best-fit line was drawn through the points, and the slope of
the straight-line portion was calculated to be P/AL = 1392 kips/in. What
is the modulus of elasticity?
BI
arrow_forward
6. State your answers to the following questions.Strain Gauge represents the deformation of a material through a change in resistance. If so, explain how temperature will affect the strain gauge in the experimental environment.①:In this experiment, the Strain Gauge measures the strain in micro units. Explain one possible error factor when applying a load by hanging a weight on the material with the strain gauge attached. (Hint: It is easy to shake by hanging the weight using a thread)①:
arrow_forward
The % of error between a theoretical shear modulus of 65 GPa and an experimental modulus of rigidity of 60235 MPa is:
Select one:
O a. 0.0791 %
O b. 7.33 %
O c. 0.0668 %
O d. 7.9 %
Torrion test is annlied to study the properties of a material subjected to tensile force.
arrow_forward
Need help starting this assignment.
1- Determine the maximum normal stress, the maximum shear stress, the Modulus of Elasticity, the maximum bending moment and the maximum stress due to bending (also known as flexure stress) on the material, from the information provided.
2- From the results of your analysis, determine what material was used for this test. Check whether the material can withstand the different types of loading the hip implant experiences. Use a factor of safety of 4.
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No wrong answer please , i could downvote
The piece of suture is tested for its stress relaxation properties after cutting 3 cm long sample with a diameter of 1mm. The initial force recorded after stretching 0.1 cm between grips was 5 Newtons. Assume the suture material behave as if it has one relaxation time. The gage length was 1 cm.
a. Calculate the initial stress.
b. Calculate the initial strain.
c. Calculate the modulus of elasticity of the suture if the initial stretching can be considered as linear and elastic.
d. Calculate the relaxation time if the force recorded after 10 hours is 4 Newtons.
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D- EVEN:
The following data are taken from a 25mm in diameter bar of length 250mm, the
following results were recorded. Assume that the curve of the stress-strain diagram is
linear from the origin to the first point.
P (load in kN)
8(elongation in mm)
0.2
0.3
112
154
167
0.4
0.5
0.6
174
181
Determine the
a. Stress at 167 KN load in MPa
b. Strain at 167 kN load in mm/mm (expressed in scientific notation)
c. Modulus of elasticity MPa
d. Modulus of resilience in N-mm/mm3
e. Modulus of toughness in N-mm/mm3
arrow_forward
You have been given the following test sample data following mechanical testing of 15
test pieces of Silicon Nitride.
What is the Weibull modulus of this material?
Would you advise the use of a similar material with a Weibull Modulus of 16.3 and a
mean failure stress of 485 MPa, if you anticipate that the peak stress on the material
could be 430 MPa?
Sample
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Select one or more:
O a. No
O b. 18.6
O C.
13.4
O d. Yes
O e. 15.7
f. 17.1
Failure Stress (MPa)
423
459
496
432
447
467
473
499
485
479
505
530
526
490
510
<
arrow_forward
A three-point bending test was performed on an aluminum oxide specimen having a circular cross section of radius 5.6 mm; the
specimen fractured at a load of 4280 N when the distance between support points was 43 mm. Another test is to be performed on a
specimen of this same material, but one that has a square cross section of 18 mm in length on each edge. At what load would you
expect this specimen to fracture if the support point separation is maintained at 43 mm?
Ff=
N
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ICLASS DISCUSSION ITEM 9.8
Piezoresistive Effect in Strain Gages
For a typical metal foil strain gage with a gage factor of 2.0, how large is the piezo-
resistive effect in comparison to the effects of change in area and change in length?
arrow_forward
Q2/ Aluminum tensile specimen with 12.5mm diameter, a gauge length of 50.8mm and the final
diameter was 10.5mm.
• Plot the engineering stress-strain curve and the true stress- strain curve.
Determine proportion limit, young's modulus, the yield point, the ultimate tensile strength,
the failure stress on drawing?
• Determine Ductility?
• Determine Resilience modulus and toughness modulus?
0.006 0.008 0.012 0.017
Strain mm/mm
Apparent Stress N/mm 100
0.004
0.22
0.25
0.27
150
200
290
325
480
450
410
True stress N/mm
100.1
150.3 201
326
400
500
550
620
arrow_forward
You are developing a test plan for a temperature cycling test of 300 cycles of T min, T max. How would you take into account the size and weight of your product when determining the duration of temperature dwells at Tmin and Tmax and the transition time between them?
arrow_forward
A tension test was conducted for a
cylindrical specimen of stain-less
steel having an initial diameter (D) of
15.55 mm. Calculate the percentage
reduction in area if the final diameter
of the specimen (d) is 7.35 mm.
Select one:
O a. 76.66%
O b. 78.66%
O c. 77.66%
O d. 79.66%
arrow_forward
What is self-heating in strain gauges? Why is it caused and what are its implications on end result?
arrow_forward
Question 5: The graph below gives a plot of force versus total sample length in a tensile test of a
polymer. The sample is cylindrical, with an initial diameter of 1 cm and an initial length of 10 cm. From
the data below, calculate the modulus, yield stress, yield strain, tensile strength, and % elongation.
1200
800
10
12
13
14
15
Lensth (cm)
Force (N)
arrow_forward
Figure 1 shows the tensile testing results for different materials. All specimens have an initial
diameter of 12 mm and an initial gauge length of 50 mm.
300
250
Low carbon steel
Network polymer
200
Crystalline polymer
150
Amorphous polymer
100
50
5
10
15
20
25
30
Strain (%)
Figure 1: Stress-strain curve
b. Determine the following parameters for each material:
• the tensile strength
the 0.2% offset yield strength
the modulus of elasticity
• the ductility
Stress (MPa)
LO
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39) A tensile test specimen has a gauge length=2in. and a diameter of 0.875in. Yielding occurs at a load of 35,500lbs. The corresponding gauge length = 2.0113in. (neglect the .2% yield point). The maximum load of 45,000lbs is reached at a gauge length of 2.543in. If fracture occurs at a gauge length of 2.673in, determine the percent elongation at fracture (Round to the nearest whole %)
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Bronze alloy, the following true stresses produce the corresponding plastic true strains, before to necking: On the basis of this information, compute the true stress necessary to produce a true strain of 0.25 and then find the engineering stress and strain at this point. True stresses (MPa) True strain 354 0121 70 018
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Given: Stress strain curve of 10 mm diameter and 1 m long ductile stainless-steel rod.
900
800
700
600
500
Mild
400
Stainless
300
200 -
100
0.1
0.2
0.3
0.4
Strain
0.5
0.6
0.7
Draw stress-strain curve for compression here
1. Label all points of significance on the stress strain curve
2. Draw the stress-strain curve for the rod in compression and label all points of significance.
3. What is the Young's modulus in tension? Assume .001 strain at 500 MPa
4. What is its Youngʻs modulus in compression?
5. What is the tensile yield strength of this rod using the 0.2% offset criteria?
6. What is the compressive yield strength of the rod?
7. What is force required to yield the rod?.
Show calculation:
8. What is the UTS of this rod?.
9. What is the force required to break the rod?
Show calculation:
10. What will be UCS of the rod?
Stress (MPa)
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Q2)
Based on data below, draw the S-N curve for fatigue test if the specimen have neck diameter
5mm, and length between applied lode and neck diameter 30mm. Hint : Ix=(pi*D^4)/64
Number of cycle (cycle)
Load ( N)
100
1*10^4
90
5*10^4
80
1*10^5
60
1*10^6
50
5*10^6
40
1*10^7
a-Find the fatigue strength at 5*10^5 cycle on curve
b-Find Endurance limit and show it on curve
arrow_forward
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Related Questions
- 9:00 blai 3 If the original specimen length is 76 (b) mm, what is the maximum length to which it may be stretched without ?causing plastic deformation إجابتك bläi 4 A cylindrical specimen of a nickel alloy having an elastic modulus of 207 GPa and an original diameter of 10.2 mm will experience only elastic deformation when a tensile load of 8900 N is applied. Compute the maximum length of the specimen before deformation if the maximum .allowable elongation is O.25 mm إجابتك Select the valid answer(s) نقطة واحدة :Metals .ying-ability is due toarrow_forward10. A standard steel specimen of 0.504" diameter elongated 0.0125" in an 8" gage length during a test where it was subjected to a tensile force of 6249 lb. If the specimen's gage length was measured to be 8.0025" after the test was over, what was the permanent plastic deformation? What is the elastic deformation and what is the modulus of elasticity of that metal? r PL AEarrow_forwardQuestion 2 In designing prosthetic sockets, the latter will need to be experimentally tested for their structural integrity. Figure 2 shows one such design of a prosthetic socket which is made of carbon fibre composite. Strain gauges are installed to record the strains at various locations of the legs during walking and the readings are recorded using a telemetry system to detemine the critical stressed area. At a particular strain gauge location indicated in Figure 2, the readings recorded by one of the 45° strain gauge rosettes are: Ea = 2500 x 10*, es = 1500 x 10°, & = -950 x 10* Using Mohr's Cicle or otherwise, detemine: (a) the principal strains and the direction of the maximum principal strain relative to the gauge "a". (b) the corresponding principal stresses and sketch the results on a properly oriented element. You may assume that the prosthetic socket is made of polypropylene whose Young's modulus of 1.0 GPa and Poisson ratio of 0.3. Figure 2arrow_forward
- Flag question You have been given the following test sample data following mechanical testing of 15 test pieces of a modified Alumina. What is the Weibull modulus of this material? Would you advise the use of this material over one with a Weibull Modulus of 19.6 and a mean failure stress of 270 MPa, if you anticipate that the peak stress on the material could be 255 MPa? Sample 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Select one or more: Failure Stress (MPa) 297 293 270 300 260 286 265 295 4 293 280 288 263 290 298 275arrow_forwardAt higher temperature, strength and strain hardening are increased, whereas, ductility is decreased which permits greater plastic deformation True False O Saaly i The strength constant (C) is increased with increasing of temperature True O False O The metal is becoming weaker as strain increases, this is because of .strain hardening (work hardening) property True O False O ly The engineering stress and strain are defined relative to the instantaneous area and length of test specimen True O False O In sheetmetal working processes, the surface area-to-volume ratio of .w.p. is low True O False O aly ihi Determine the value of the strain-hardening exponent for a metal that will cause the average flow stress to be 70% of the final flow stress after deformation 0.444 0.421 0.422 0.428 aaly i For pure copper (annealed), the strength coefficient = 330 MPa and strain-hardening exponent = 0.52 in the flow curve equation. Determine the average flow stress that the metal experiences if it is…arrow_forward10. The following results were obtained in a tensile test on a mild steel specimen of original diameter 20 mm and gauge length 40 mm. Load at limit of proportionality 80 kN Extension at 80 kN load 0.048 mm Load at yield point 85 kN Maximum load 150 kN When the two parts were fitted together after being broken, the length between gauge length was found to be 55.6 mm and the diameter at the neck was 15.8 mm. Calculate Young's modulus, yield stress, ultimate tensile stress, percentage elongation and percentage [Ans. 213 kN/mm2; 270 N/mm²; 478 N/mm²; 39%; 38%] reduction in area.arrow_forward
- Select one or more: a. 28.6 Ob. 22.8 O c. 3.7 Od. No Oe. 4.9 Of. Yes 0 8 9 10 11 12 13 14 15 g. 18.5 295 293 280 288 263 290 298 275arrow_forwardQUESTION The following data were obtained during a tension test of a low carbon steel specimen having a gauge length of 100 mm. At the point where the stress strain curve deviated from linearity, the load was 35KN, the gauge length was 102.5 mm and the diameter of the specimen was 1.6 mm. Before necking began, loads of 45 KN and 55 KN produced gauge lengths of 103.4 mm and 107.7 mm respectively. Calculate (a) The Modulus of elasticity (b) The Strainhardening exponentarrow_forward02: A steel specimen 12mm diameter has gauge length 50mm. the steel specimen had tested via tensile test under maximum load 66KN with elongation 7.5mm, and the yield load of this specimen is 15KN with elongation 2.4mm. Calculate: 1- The engineering ultimate stress (ultimate tensile strength), and engineering strain at this point. 2- The engineering stress and strain at yield point. 3- The modulus of elasticity, and the modulus of resilience. 4- The final or fracture strain of a steel specimen, if you know that the final length of specimen after testing is 58.5mm. 5- The true stress and strain for ultimate point.arrow_forward
- A tensile test was performed on a metal specimen with a diameter of 1/2 inch and a gage length (the length over which the elongation is meas- ured) of 4 inches. The data were plotted on a load-displacement graph, P vs. AL. A best-fit line was drawn through the points, and the slope of the straight-line portion was calculated to be P/AL = 1392 kips/in. What is the modulus of elasticity? BIarrow_forward6. State your answers to the following questions.Strain Gauge represents the deformation of a material through a change in resistance. If so, explain how temperature will affect the strain gauge in the experimental environment.①:In this experiment, the Strain Gauge measures the strain in micro units. Explain one possible error factor when applying a load by hanging a weight on the material with the strain gauge attached. (Hint: It is easy to shake by hanging the weight using a thread)①:arrow_forwardThe % of error between a theoretical shear modulus of 65 GPa and an experimental modulus of rigidity of 60235 MPa is: Select one: O a. 0.0791 % O b. 7.33 % O c. 0.0668 % O d. 7.9 % Torrion test is annlied to study the properties of a material subjected to tensile force.arrow_forward
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