Order number
page 14
940406-171827
set 5 with 1 OFFICIAEGSEONLY
Item 23
150.
110.
70.
300.
371.
\
REPORT NUMBER
AD-A~--109000/0
PATENT ASSIGNEE
PUB. DATE (YYMMDD)
ERA-07:034634;EDB-82:085118
811000
PRIMARY TITLE (M)
Laboratory verification of blast-induced
liquefaction mechanism. Final report Jan-Jul’81
PERSONAL AUTHOR (M)
Fragaszy, R.J.; Voss, M.E.
34. CLASSIF. LEVEL TEXT
unclassified
950. ABSTRACT
A mechanism for blast-induced liquefaction was
tested in a series of high pressure undrained, isotropic
compression tests on saturated samples of Eniwetok beach
sand and Ottawa sand. Theory, based on inelastic volume
compressibility of sand, was shown to be valid for the
case of quasi-static, isotropic loading. Specimens of
Eniwetok sand subjected to an initial effective stress
of 1 MPa were liquefied by a single cycle of loading of
34 MPa. Specimens of Ottawa sand, tested in the same
manner,
801.
KEYWORD (S)
generated excess pore pressure but not enough to
completely liquefy the soil. The errors introduced by
flexibility of the testing systems were analyzed and
found to be insignificant. Suggestions for future
research were made.
SAND/liquefaction ;SOILS/liquefaction ;ATOMIC
EXPLOSIONS/simulation ; SAND; LIQUEFACTION; SOILS; SOIL
MECHANICS; FLUID MECHANICS;HIGH PRESSURE; SATURATION;
VOLUME; STATIC LOADS;DYNAMIC LOADS;STRESS AND STRAIN;
ENIWETOK; SIMULATION; GROUND MOTION; BLAST DAMAGE; PRESSURE
DEPENDENCE
Item 24
90.
60.
300.
371.
34.
PRIMARY TITLE (A)
PERSONAL AUTHOR (A)
PATENT ASSIGNEE
PUB. DATE (YYMMDD)
CLASSIF. LEVEL TEXT
950. ABSTRACT
801. KEYWORD(S)
Rain from South and snow from North
Miyake, Y.
EDB-82:014710
541200
unclassified
Detection of nuclear explosions by various methodsincluding observations of fission product activity in
the atmosphere is discussed. Deposition of 750 cpm ona
vase-line coated paper (30 x 30 cm) on May 13 to 16,
1954 was recorded. Highty-six thousand cpm/l1 was
observed in rain at Kyoto on May 14, apparéhtly from the
May 5 test at Bikini.
RAIN/radioactivity ;SNOW/radioactivity ;ATOMIC
EXPLOSION DETECTION/; JAPAN/radiation monitoring ;RAIN;
RADIOACTIVITY; SNOW; FISSION PRODUCTS; ATMOSPHERE; FALLOUT;
JAPAN; BIKINI; ATOMIC EXPLOSIONS
5003388
CFFICIAL USE ONLY