C++ computer programmingComputer programming assessment check attached
Propertiesof MaterialsHNotes:
Properties of materials vary greatly depending upon manufacturingprocesses, chemical composition, internal defects, temperature, previous loading history, age, dimensions of test specimens, and other factors. The tabulatedvalues are typical but should never be used for specific engineering or designpurposes. Manufacturers and materials suppliers should be consulted for information about a particular product.
Except when compression or bending is indicated, the modulus of elasticity E, yield stress sY, and ultimate stress sU are for materials in tension.H136033_19_appH_pH1-H5.qxd 4/6/11 8:18 AM Page H1© 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.H2 APPENDIX H Properties of MaterialsTABLE H-1 WEIGHTS AND MASS DENSITIESMaterialWeight density g Mass density rkN/m3 kg/m3Aluminum alloys 26–28 2,600–2,8002014-T6, 7075-T6 28 2,8006061-T6 26 2,700Brass 82–85 8,400–8,600Bronze 80–86 8,200–8,800Cast iron 68–72 7,000–7,400ConcretePlain 23 2,300Reinforced 24 2,400Lightweight 11–18 1,100–1,800Copper 87 8,900Glass 24–28 2,400–2,800Magnesium alloys 17–18 1,760–1,830Monel (67% Ni, 30% Cu) 87 8,800Nickel 87 8,800PlasticsNylon 8.6–11 880–1,100Polyethylene 9.4–14 960–1,400RockGranite, marble, quartz 26–28 2,600–2,900Limestone, sandstone 20–28 2,000–2,900Rubber 9–13 960–1,300Sand, soil, gravel 12–21 1,200–2,200Steel 77.0 7,850Titanium 44 4,500Tungsten 190 1,900Water, fresh 9.81 1,000sea 10.0 1,020Wood (air dry)Douglas fir 4.7–5.5 480–560Oak 6.3–7.1 640–720Southern pine 5.5–6.3 560–64036033_19_appH_pH1-H5.qxd 4/6/11 8:18 AM Page H2© 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.APPENDIX H Properties of Materials H3TABLE H-2 MODULI OF ELASTICITY AND POISSON’S RATIOSMaterialModulus of elasticity E Shear modulus of elasticity GPoisson’sGPa GPa ratio nAluminum alloys 70–79 26–30 0.332014-T6 73 28 0.336061-T6 70 26 0.337075-T6 72 27 0.33Brass 96–110 36–41 0.34Bronze 96–120 36–44 0.34Cast iron 83–170 32–69 0.2–0.3Concrete (compression) 17–31 0.1–0.2Copper and copper alloys 110–120 40–47 0.33–0.36Glass 48–83 19–35 0.17–0.27Magnesium alloys 41–45 15–17 0.35Monel (67% Ni, 30% Cu) 170 66 0.32Nickel 210 80 0.31PlasticsNylon 2.1–3.4 0.4Polyethylene 0.7–1.4 0.4Rock (compression)Granite, marble, quartz 40–100 0.2–0.3Limestone, sandstone 20–70 0.2–0.3Rubber 0.0007–0.004 0.0002–0.001 0.45–0.50Steel 190–210 75–80 0.27–0.30Titanium alloys 100–120 39–44 0.33Tungsten 340–380 140–160 0.2Wood (bending)Douglas fir 11–13Oak 11–12Southern pine 11–1436033_19_appH_pH1-H5.qxd 4/6/11 8:18 AM Page H3© 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.H4 APPENDIX H Properties of MaterialsTABLE H-3 MECHANICAL PROPERTIESMaterialYield stress sY Ultimate stress sU Percentelongation(25 mm gageMPa MPa length)Aluminum alloys 35–500 100–550 1–452014-T6 410 480 136061-T6 270 310 177075-T6 480 550 11Brass 70–550 200–620 4–60Bronze 82–690 200–830 5–60Cast iron (tension) 120–290 69–480 0–1Cast iron (compression) 340–1,400Concrete (compression) 10–70Copper and copper alloys 55–760 230–830 4–50Glass 30–1,000 0Plate glass 70Glass fibers 7,000–20,000Magnesium alloys 80–280 140–340 2–20Monel (67% Ni, 30% Cu) 170–1,100 450–1,200 2–50Nickel 100–620 310–760 2–50PlasticsNylon 40–80 20–100Polyethylene 7–28 15–300Rock (compression)Granite, marble, quartz 50–280Limestone, sandstone 20–200Rubber 1–7 7–20 100–800SteelHigh-strength 340–1,000 550–1,200 5–25Machine 340–700 550–860 5–25Spring 400–1,600 700–1,900 3–15Stainless 280–700 400–1,000 5–40Tool 520 900 8Steel, structural 200–700 340–830 10–40ASTM-A36 250 400 30ASTM-A572 340 500 20ASTM-A514 700 830 1536033_19_appH_pH1-H5.qxd 4/6/11 8:18 AM Page H4© 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.APPENDIX H Properties of Materials H5TABLE H-3 MECHANICAL PROPERTIES (Continued)MaterialYield stress sY Ultimate stress sU Percentelongation(25 mm gageMPa MPa length)Steel wire 280–1,000 550–1,400 5–40Titanium alloys 760–1,000 900–1,200 10Tungsten 1,400–4,000 0–4Wood (bending)Douglas fir 30–50 50–80Oak 40–60 50–100Southern pine 40–60 50–100Wood (compression parallel to grain)Douglas fir 30–50 40–70Oak 30–40 30–50Southern pine 30–50 40–70TABLE H-4 COEFFICIENTS OF THERMAL EXPANSIONCoefficient ofMaterial thermal expansion a106/°CAluminum alloys 23Brass 19.1–21.2Bronze 18–21Cast iron 9.9–12Concrete 7–14Copper and copper alloys 16.6–17.6Glass 5–11Magnesium alloys 26.1–28.8Monel (67% Ni, 30% Cu) 14Nickel 13Coefficient ofMaterial thermal expansion a106/°CPlasticsNylon 70–140Polyethylene 140–290Rock 5–9Rubber 130–200Steel 10–18High-strength 14Stainless 17Structural 12Titanium alloys 8.1–11Tungsten 4.336033_19_appH_pH1-H5.qxd 4/6/11 8:18 AM Page H5© 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.
Lab 2: Virtual Mechanical Properties of Materials in Tension
Data table based on the VMSE plots & Appendix
Sample
E(GPa)
(.002 offset) (MPa)
(MPa)
(MPa)
*Text E (GPa)
*Text (MPa)
Temp. steel
Aluminum
Carbon steel
Cast iron
HDPE
Nylon
Questions:
Compare materials in order from lowest to highest values obtained for: E, , , and
Using Appendix H & Callister Text, how closely do your values for E & match the expected values? Which ones were different? Why might this be?
What is the optimal shape geometry for a tensile specimen? Why?
What is necking and when does it occur?
Which material is most ductile? Which is the most brittle?
Assuming a Poisson’s ratio of 0.3, what would be the lateral strain for tempered steel at a stress of 900 MPa? What about at 1600 MPa?
Repeat the measurement of E and yield stress 10 times for a tempered steel. What is the average and standard deviation? Give units!!!
***Extra Credit: Comment on the meaning of the average and standard deviation derived in (8) — what does this tell you about the reliability of your results? (with respect to design or even grading this assignment, should this be considered?
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