Page 28 - KAJIDAYA BAHAN

KAJIDAYA BAHAN

iii) Terikan sisi

-(Do –Df )
sisi = ------------

Do
-3
-3
-(30 x 10 ) –(29.994 x 10 )
= -------------------------------------
-3
30 x 10
-4
= 2 x 10

iv) Modulus Young

E = -------
paksi

141.463 x 10 6
= ---------------------
7.3125 x 10
-4

9 2
= 193.454 x10 N/m

v) Tenaga terikan

1
U = --- PL
2

1
-5
3
= ---- (100 x 10 ) ( 5.85 x 10 )
2

= 2.925 J

vi) Faktor keselamatan jika tegasan muktamad 230 MPa

max/muktamad
F.K = ------------------
kerja

6
230 x 10
= ----------------
141.463 x 10 6

= 1.63

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