Coa Demit Md Maidu Bo mn Yin sm urs ann tatus spes MATERIAl w|( Ar|b Nw/y(.opla. choi Hat m wil,sMn),n,第体,Mm“ A127河 2 HB(O), n, amani) 23科叫可m CPRPL湘m(可电 wos uw 29 xox wr allot s0(x}2 Epo tlwrmnenl 402 CFRP Latta (glasst n3422 G Pnly anst (alnm 6x0 Pnlyhadaiimmw elastomer m日x刘可 arylene (IDPK Polyn latw elastomer o可0m Polyol rilirile r f IVc piywtI9 oe a mWWWMW Silica, Carh(SiC) uw叫Wx 2. 利hug由C Sia anld 020 270 litman wloy (Al4V Halen Carbide w
Ceramics Metals Polymers Composites Diamond upperlimit WC. SIC Osmium ALO SiN Cermets Molybde Chromium Zre Nickel CFRP Mullite Iron Steel Silica Copper Soda glass Titanium Alkali halide Aluminum Fibreglass Concrete GFRP's 10 Woods Melamines el grain Polystyrene Epoxy Woods perpendicular (high density Polyethylene (low density )Y Polypropylene Rubbers Foamed polymer Source: Ashby, M F Materials selection in mechanical design. Boston Butterworth- Heinemann 1999
E/GN m-2 103 102 10 1 10-1 10-2 10-3 Ceramics Metals Polymers Composites upper limit Al2O3 3N4 ZrO2 Ice Tungsten Nickel Zinc Tin Epoxy ) ) PVC Foamed , Si Diamond WC, SiC MgO Mullite Silica Soda glass Alkali halides Cement Concrete Graphite Osmium Molybdenum Chromium Iron + Steel Copper Titanium Aluminum Magnesium Lead Alkyds Melamines Polyamides PMMA Polystyrene Nylon (high density Polyethylene (low density Polypropylene Rubbers polymers Cermets CFRP’s Fibreglass GFRP’s Woods, parallel grain Woods, perpendicular grain Source: Ashby, M.F. Materials selection in mechanical design. Boston: Butterworth - Heinemann, 1999
Ceramics Metals Polymers Composites 200 Pure ductile 100 Mild steel H.S. steels Ti alloys Med-C steel Al alloys BFRP CFRP Metals which Cermets leave E Woods Beryllium ABS-PS Polypropylene Woods Rocks Polycarbonate parallel grain (low density) PMMA Soda glass 0.5 Cement. Ice 0.2 Source: Ashby, M.F. Materials selection in mechanical design. Boston Butterworth-Heinemann. 1999
Kc/MN m-3/2 Ceramics Metals Polymers Composites 200 100 10 Al2O3 Si3N4 Epoxy ) ) reinforced H.S. steels Med-C steel which at low SiC MgO Rocks Cement, Ice Pure ductile metals Rotor steels HY 130 Mild steel ABS-PS Polypropylene Nylon Polyester (high density P.S. Polyethylene Polycarbonate (low density PMMA Cermets CFRP Fibreglass BFRP GFRP Woods, perp. grain; Fibrecements Woods, parallel grain Soda glass Ti alloys Al alloys Metals cleave: BCC/HCP Metals temps Beryllium 50 20 5 2 1 0.5 0.2 Source: Ashby, M.F. Materials selection in mechanical design. Boston: Butterworth - Heinemann, 1999
Materials Selection for Flywheels Fly Whe Kinetic energy: U=Ia=pR102 Mass 兀R··p er unit mass: U_Ro 3+V Stress:0,8 Ro Maximum energy densit s Want maximum op p(3+v See Fig 10 in M. F. Ashby, Materials Selection in Mechanical Design, Pergamon Press, Oxford, 1992
