Figure A2-2 shows the chain plate from bicycle chain. The plate is manufactured from quenched and...

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Figure A2-2 shows the chain plate from bicycle chain. The plate is manufactured from quenched and tempered C steel and is intermittently loaded from 0 to 1200 N as the chain moves around the chainwheel during cycling. 12.5 mm- 1.5 mm 5 mm radius 3 mm diameter Figure A2-2 Bicycle chain plate. Additional information Tensile strength of the steel = 650 MPa Yield strength of the steel = 450 MPa Geometric stress concentration factor chart for this geometry (see Figure A2-3) Notch sensitivity factor for steels and aluminium alloys (see Figure A2-4) (i) Assess the factor of safety against yield of the chain. (ii) Use the data in Figure A2-1 to estimate the fatigue strength of the steel. (3 marks) (2 marks) Figure A2-2 shows the chain plate from bicycle chain. The plate is manufactured from quenched and tempered C steel and is intermittently loaded from 0 to 1200 N as the chain moves around the chainwheel during cycling. 12.5 mm- 1.5 mm 5 mm radius 3 mm diameter Figure A2-2 Bicycle chain plate. Additional information Tensile strength of the steel = 650 MPa Yield strength of the steel = 450 MPa Geometric stress concentration factor chart for this geometry (see Figure A2-3) Notch sensitivity factor for steels and aluminium alloys (see Figure A2-4) (i) Assess the factor of safety against yield of the chain. (ii) Use the data in Figure A2-1 to estimate the fatigue strength of the steel. (3 marks) (2 marks)