NOT - Fr ce ain ski ca tegor ies this mes r ement is not psible bca use the ski is flatened by the foe in ac cor da nc e with the tale.
Trang 1INTR ATIO AL O GNIZATIO FO STAD RIZATIO MEX~Y AO~HR O l-AM3ALU’fl fl0 CTA~ATM3ALW O G NISTIO INT RATIO AL DE N RMALISTIO
Desc r iptor s : Spr ts eq ipment S s, c ros cou tr y S s, d amic pr opr ties, tests, flatenin t ests
Pr i e ba sed on 4 pges
Trang 2ISO (h Intern tio al Orga izatio for Sta d rdizatio ) is a worldwid fe eratio of
Spors a nd r ecr ea tio al e uipme t
0
Printed in S itzerlan
Trang 3Cr oss-countr y sk is - Deter mination of dynamic
selecting a ski with a pro riate stifn s For th later purp se,
-
lo d n ces ary to bring th ce tre p rt of th sk i in first
co tact with th Sn w If th ski is lo d d with a high r lo d
influe ce th sk i b h viour significa tly For lower lo ds,
th ce tral p rt of th ski b se wi h v a min r influe ce o
th f rictio ;
-
th le gth of th ski b se which is n t in firm co tact with
sk ier This Parameter h s sp cial rele a te for sk is d sign d
for u e of wax as a k ick ing aid (esp cialy o wet sn w or
ice)
se eral factors, s ch as th sk ier’s weight a d sk il sn w co -
ditio s, sk i co stru tio , b se stru ture a d pre aratio lt is
this test ca n t b directly relate to th qualty of th sk i
T his Intern tio al Sta d rd is a plca le to Cros -country sk is
of size 13 cm a d lo ger
- Sp cifica Go s
ISO 6 8 , S s - Ter ms a d d finitio s
Point b twe n th run ing s rface of th ski a d a flat h rito -
tal s rface wh n th sk i is s bjecte to a lo d, F (sec fig re 1)
co tact lo d :
lo d d with 2 4 N;
with its own mas
fig re 1)
co tact lo d :
with 2 4 N;
with its own weight
Trang 43.3
test lo d, J? Forte n rmal to th flat s rface a d a ple
at th lo d a plcatio Point P (sec fig re 1)
residual camb r h ight to 0,3 m
camb r le gth remaining afer a Sta d rd lo d, &, h s b e
A b am, at le st 2 0 cm lo g a d 10 cm wid with a flatn s
le st 2 h at a Sta d rd atmosp ere of 2 / 50 in ac ord nce with
ISO 5 4 with ordin r f tolera tes a d at ( 10 + 2) O
-
a erage fo t size of th sk ier
Trang 57 Stan ard test load u ed for
For dif fer ent sk i siz s, th Stan ar d te t load & s al be
r esid al camber le gth IRs
Ta le
Nominal len th, I
Stan ar d test lo d, Fs
c m
N
20
32
215
38
210
33
25
319
20
24
19
20
19
25
18
21
18
19
15
7
15
5
13
2
T he te ts are t o be car rie o t at a Stan ar d atmo ph r e of
2 /5 in acor dan e w ith ISO 5 4 w ith or dinar y toler ante a nd
a t -10 OC
T he te t r epor t s al in lu e t he folow in infor matio :
Mark th load a plcatio Point in acordan e w ith f ig r e 1 o
t he top s r f c of t he sk i L oad th sk i at this lo atio in
a pr opr iate in reme ts up to t he c ntact load For eac load
+ 10 m
L oa d t he sk i w ith t he Stan ar d te t load F’ as in icate in th
in icate in 8.1
s r f c s t he fe ler ga ug u e s o ld be a t least 2 m w id
Read t he load w hic Cau e a re id al camber h ig t of 0,3 m
w ith a n ac urac of - 5 N
NOT - Fr ce ain ski ca tegor ies this mes r ement is not psible
bca use the ski is flatened by the foe in ac cor da nc e with the tale
lt is r ec m e d d that o a 3-ccle s mi-lo arithmic gr a ph
b e plote again t t he te t load F o t he ln ar sale, a nd t h ,
o ln ar graph Pa er , t he r esid al camber le gth IRF e plote
a gain t th te t load F (s c f ig re 2 a nd 3) From th later plot
t he Stan ard te t load & In ad itio , d ter min fom th
f or mer plot th c ntact load & by meas r i g t he load w hic
Cau e a re id al camber h ig t of 0,3 m
The v alu s f or c ntact load FC a nd Stan ar d r esid al camber
le gth IR s al be t he a v er ag v alu s of 6 sk is (3 p irs) w ith th
Stan ar d d v iatio
a)
r ef er en e to this Inter natio al Stan ard;
b) man factur er a nd mo el d sig atio of t he sk i;
d) te t temper atur e;
e) te t re ults;
r eas n
Trang 6677
588
490
z
r r :
c
.-
g
-l
98
70
60
50
40
30
20
IO
I)
0
Re id al camber h ig t,
I
Fig re 2
785'
80
2
kc
'50
z
-I=
u¶
.-
z
-a m - -
-3
’ IO
I
I
Camber le gth, /RO
0
V
250
Y
Re id al camber le gth IRF m
I
Fig re 3