CE 311 Lab Report 1 L Mauriot

7:50 ul LTE O A docs.google.com Choose the correct answer * During the tensile test, experiment on a sample of mild steel, data represented in the figure below was obtained with an initial diameter (do) of 0.505 inch. At failure, the reduced diameter (d) of the sample was 0.305 inch. Gauge Length (Lo) is 2 inches and final Gauge Length (L,) is 2.625 inches. Answer the questions below: Us 70 Tk LyP IR 50- FL PL ptiel linit AL or 6T P EL lastie lii UP per yied paint Lypi Lewer s us t uni mated streagth IR: Indicatul siregh Rupture TR True strugth Ruple fPL (propartimal timt) Direct strain & to to E strmin Cin/in) a b 1. Mild steel is: (a) brittle materials (b) ductile material (c) between the ductile and the brittle 2. Young's Modulus evaluates elasticity within the region from: (а) 0 - Proportional Limit. (b) Proportional Limit - Lower yield Point. (c) Lower

Calculate 6 Calculate the tensile stress when applied force of 120OON on specimen of * diameter of 7mm 111 O 211 O 311 O 411 O

Problem 24.16 It has been observed that the yield strength of the material of a component is normally distributed with a mean of 230 N/mm² and a standard deviation of 30 N/mm². The stress induced in the component is also normally distributed with a mean of 150 N/mm² and a standard deviation of 15 N/mm². Determine the reliability used in designing the component.

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The thermal stresses in structural members are an important but generally ignored part of the overall structural analysis procedure. At times, these are of the order of load induced stresses as well which makes them worth the attention. Write a short note on the importance of recognising and evaluating thermal stresses in structures and also compare them with load induced stresses.

A brass alloy rod having a cross sectional area of 100 mm2 and a modulus of110 GPa is subjected to a tensile load. Plastic deformation was observed tobegin at a load of 39872 N.a. Determine the maximum stress that can be applied without plasticdeformation.b. If the maximum length to which a specimen may be stretched withoutcausing plastic deformation is 67.21 mm, what is the original specimenlength?

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A steel specimen of 300 mm length and 30 mm diameter is subjected to tensile test in a computerizedUTM. Under 54 kN of tensile load, the final length and diameter are observed as 300.112 mm and29.99634 mm respectively. Calculate (a) the Poission’s ratio and (b) the values of three moduli.

an 30 Show Transcribed Text The varying, fluctuating stresses shown to the below are found at the critical location of a component. The material is steel, the fully adjusted endurance limit is 25 ksi, the ultimate strength is 200ksi. The fatigue strength fraction is f = 0.77. What is the life of the part in hours if this 6 second stress pattern continues to repeat for the remainder of the part's life? Show Transcribed Text Less than one hour 10 to 20 hours 39 to 42 hours 43 to 45 hours 50 to 55 hours 100 to 105 hours t(sec)

The following data were obtained from the tensile test of Aluminum alloy. The initial diameter of testspecimen was 0.505 inch and gauge length was 2.0 inch. Plot the stress strain diagram and determine(a) Proportional Limit (b) Modulus of Elasticity (c) Yield Stress at 0.2% offset (d) Ultimate Stress and(e) Nominal Rupture Stress.

A sample of a steel alloy has a yield strength of 560 MPa, ultimate tensile strength of 630 MPa, and Young's modulus of 200 GPa. a) What is the maximum load that can be applied to a sample with a square cross-section of 10.0 mm by 10.0 mm without plastic deformation occurring? b) If the original sample length prior to testing was 63 mm, what is the maximum length that it can be elongated to without causing plastic deformation? c) What is the difference between elastic strain and total strain?

The (G-E) diagram obtained in the tensile test performed on a metal sample with a diameter of 16 mm is as follows. The loads at points A, B and C and the elongation measured on l. 16 cm gauge length were determined as follows: B A B C Load (kgf) 4800 8400 7200 Elongation (mm) 0.192 28.8 38.4 a) Calculate the proportionality limit, modulus of elasticity, tensile strength, maximum uniform elongation, and contraction-elongation ratio of the metal. b) Since the measured diameter of the metal at break is 12 mm, find the constriction ratio and the actual stress at break.

Explain the concept of yield strength and its importance in material testing.