Rnaea 19. CeoMcTea nopowKOBblX M3AenMM M MeTOAbl MX KOHTpons.



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ЗНАЕТЕ ЛИ ВЫ?

Rnaea 19. CeoMcTea nopowKOBblX M3AenMM M MeTOAbl MX KOHTpons.



 

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TeJia K ero npO'IHOCTH B 6ecnopHCTOM COCTO.HHH H) OT OTHOCHTeJib­

HOH IlJIOTHOCT11 S np11Be)leHa Ha pHc. 269 (cxeMa oaJihllll1Ha-X10TTH­ ra) 11 Bb paxaeTC.H KaK X - Sm, r,lle m npl1HHMaeT JHa'leHHSI OT 0 )lO 10. 06b 'IHO Bh )leJISIIOT 11eTblpe rpynilhl CBOHCTB: 1) He JaB11CSIIu;He OT nopHCTOCTH (m = 0) - MHKpOTBep)lOCTh, TeMnepaTypa IlJlaBJieHHSI H

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)lOH <t>Je, npH'leM TOJihKO B aKTHBHOH qacTH ee o6neMa, xapaKTepH­ JyeMoH aK; 2) TaKHe CBOHCTBa <t>aJh , JanoJIH.HIOmew nophI, KaK npo11- HOCTh, 3JieKTponpOBO)lHOCTh, JBYKOilpOBO)lHOCTb H T.n. no cpaBHe­ HHIO co CBOHCTBaMH TBep)lOH <t>aJbl HC'leJaIOme MaJibl H HMH MO)l(HO

npeHe6pe'lh; 3) eCJIH TBep)la.H <t>aJa CaMa COCTOHT HJ HeCKOJihKHX paJ­


CTBa MaTepHaJia - TenJIOeMKOCTh, MarHl1THa.H

3) CBOHCTBa THna npoBO)lHMOCTH

( m = 1,5+2) -3JieKTpO- H TeilJIOilpOBO,ll- x,....

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uaeMOCTh; 4) CTpYKTypH0-11YBCTBl1TeJib­

Hbie CBOHCTBa (m = 3+ 10) -npO'IHOCTh,

0,5

nJiaCTH'IHOCTb, MaKCl1MaJibHa.H MarHHT­

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BeJpaJMepHbie CBOHCTBa nopHCTOfO


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TeJia C/CK (r)le C -CBOHCTBO nop11cToro

TeJia, OTHeCeHHOe K ero HOMl1HaJihHblM


0 0,25


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274


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11J CBOHCTB nopHCToro o6paJua, MOXHO


PHc. 269. 3aBHCHMOCTb OTHo­

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a)J.lJ,HTHBHbi e xapaKTepHCTHKH; 3 -CBOHCTBa THna npoBO,llHMO­ CTH; 4 - CTpyKT)'pHO- YBCTBH­

TCJlbHblC xapaKTepHCTHKH


275


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aJS = (//f)-2 , aK = E/ EK,

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paMH.


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MHX qacTHU nopOllIKa, oco6eHHO B CJiyqae HaJIHqHjJ B HHX



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