Materials and Science Engineering

Sheet1

Table 1: temperature and impact energy values for steel							Table 3: width of the steel specimen prior to impact (inches)
steel	Temp °C						Specimen	Width #1	Width #2	Width #3	Width Average
	-70	-44	0	25	100		A	0.3750	0.3750	0.3740	0.3747
Impact energy (ft-lbs)	5	35	57	78	65		B	0.3745	0.3755	0.3770	0.3757
	7	32	48	69	83		C	0.3740	0.3740	0.3790	0.3757
	18	26	55	67	94		D	0.3740	0.3770	0.3735	0.3748
	14	39	54	68	80		E	0.3740	0.3780	0.3790	0.3770
	10	27	67	75	95
	10	30	63	76	90		Table 4: width of aluminum specimen prior to impact (inches)
	5	16	35	76	94		Specimen	Width #1	Width #2	Width #3	Width Average
	6	16	34	76	103		A	0.3765	0.3765	0.3770	0.3767
	5	16	61	76	94		B	0.3765	0.3765	0.3770	0.3767
	6	17	47	66	73		C	0.3765	0.3780	0.3785	0.3777
	13	19	54	70	85		D	0.3775	0.3770	0.3800	0.3782
	8	19	41	66	108		E	0.3760	0.3760	0.3770	0.3763
	13	14	27	90	138
Avg	9.2307692308	23.5384615385	49.4615384615	73.3076923077	92.4615384615		Table 5: width of the steel specimen after impact (inches)
							Specimen	Width #1	Width #2	Width #3	Width Average
							A	0.3740	0.3730	0.3740	0.3737
Table 2: temperature and impact energy values for aluminum							B	0.3745	0.3745	0.3735	0.3742
aluminum	Temp °C						C	0.3730	0.3965	0.3745	0.3813
	-70	-44	0	25	100		D	0.3725	0.3745	0.3740	0.3737
Impact energy (ft-lbs)	9	10	9	8	8		E	0.3735	0.3735	0.3735	0.3735
	8	9	8	9	8
	9	8	9	8	9		Table 6: width of aluminum specimen after impact (inches)
	9	8	8	8	9		Specimen	Width #1	Width #2	Width #3	Width Average
	10	10	10	10	10		A	0.3755	0.3840	0.3760	0.3785
	9	10	11	10	8		B	0.3765	0.3795	0.3755	0.3772
	8	7	9	11	11		C	0.3760	0.3810	0.3765	0.3778
	8	8	7	8	8		D	0.3765	0.3780	0.3775	0.3773
	11	7	8	7	9		E	0.3770	0.3760	0.3775	0.3768
	8	7	7	8	7
	6	7	7	8	8		Table 7: changes in width of St specimen
	7	8	8	8	8		Specimen	Initial Width	Final Width	Δ Width
	7	11	9	9	7		A	0.3747	0.3737	-0.0010
Avg	8.3846153846	8.4615384615	8.4615384615	8.6153846154	8.4615384615		B	0.3757	0.3742	-0.0015
							C	0.3757	0.3813	0.0057
							D	0.3748	0.3737	-0.0012
							E	0.3770	0.3735	-0.0035
							Table 8: changes in width of Al specimen
							Specimen	Initial Width	Final Width	Δ Width
							A	0.3767	0.3785	0.0018
							B	0.3767	0.3772	0.0005
							C	0.3777	0.3778	0.0002
							D	0.3782	0.3773	-0.0008
							E	0.3763	0.3768	0.0005

Impact Energies vs Temperature

Steel -70.0 -44.0 0.0 25.0 100.0 9.23076923076923 23.53846153846154 49.46153846153846 73.30769230769231 92.46153846153846 Aluminum -70.0 -4 4.0 0.0 25.0 100.0 8.384615384615385 8.461538461538461 8.461538461538461 8.615384615384614 8.461538461538461

Temperature (°C)

Impact Energies

(ft-lbs)

Changes in Width vs Temperature

Steel 0.00183333333333335 0.0005 0.000166666666666648 -0.000833333333333408 0.0005 9.23076923076923 23.53846153846154 49.46153846153846 73.30769230769231 92.46153846153846 Aluminum 0.00183333333333335 0.0005 0.000166666666666648 -0.000833333333333408 0.0005 8.384615384615385 8.461538461538461 8.461538461538461 8.615384615384614 8.461538461538461

Temperature (°C)

Changes in Width

(in)