consider a tension member that is a part of the structure of a personal aircraft. for a preliminary material selection, assume that the member has a square crosus section of side h that may vary with material choice. the length l. is fixed. there are two functional requireme nts. first a force p, must be resisted such that there is a safety facior against the material exceeding its failure strength. second, the deflection due to foree p must not exceed a given length change al. make a compromise choice among the materials from table below that considers these requirements, lightweight, cost. briefly explain why you have chosen the materials as well. elastic strength density material type example modulus cost e, gpa, mpa . g/cmc structuraf mild) steel low alloy steel high strength aluminom alloy titanium alloy 203 207 71 aisi 1020 steel 7.9 aisi 4340 steel 7075-t6 ai ti-6al-4v 1103 1185 4.5 45 eneineering polymer polycarbonate 1,5 wood economical compositeglass cloth in epoxy high performance composite graphite in epoxy 12.3 loblolly pine (gfrp) laminate (cfrp) 380 2.0 10 76 930 1.6 200
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Physics, 22.06.2019 06:40
Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?
Answers: 2
Physics, 22.06.2019 13:10
Most short-period comets do not have randomly oriented orbits because
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Physics, 22.06.2019 14:40
14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is
Answers: 1
consider a tension member that is a part of the structure of a personal aircraft. for a preli...
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