Order number
page 43
940406-171827-13
set 5 with 102 of OFFICIALUSE ONLY
thermal radiation by a nuclear detonation. It consists
of irradiating the surface with a known amgunt of
thermal energy and measuring the energy absorbed. The
methods and equipment for the measuring technique,
tested in the laboratory and during Operation Redwind,
were shown to be reliable,
801.
KEYWORD (S)
repeatable,
and accurate to
within a probable error of +- 5 percent. It is concluded
that the absorptivity values obtained on painted panels
by the thermal irradiation method define that portion of
the incident energy causing a temperature rise in the
panel more accurately than does a method depending on
the measurement of reflected energy. 6 references.
AIRCRAFT SKIN/absorptivity
; THERMAL
RADIATION/absorption ;PAINTS/absorptivity ;ABSORPTIVITY;
ABSORPTION; PAINTS; ATOMIC EXPLOSIONS; REDWING; MEASUREMENT ;
THERMAL RADIATION EFFECTS
Item
150.
110.
70.
710.
371.
34.
950.
77
REPORT NUMBER
PRIMARY TITLE (M)
ITR--1630-2
Behavior of deep reinforced-concrete slabs in
high-pressure regions. Project 3.6 (supplement) [of]
Operation Hardtack
PERSONAL AUTHOR (M)
CORPORATE SOURCE
R.N.
(USA)
PUB. DATE (YYMMDD)
CLASSIF. LEVEL TEXT
ABSTRACT
Bultmann,
E.H.
Jr.;
Haltiwanger,
J.D.;
Wright,
III
Air Force Special Weapons Center, Kirtland AFB, NM
;Illinois Univ., Urbana (USA)
581215
Official Use Only
(See also ITR-1630-1.) This is a summary of all
data acquired since the submission of the ITR-1630-1.
The data indicate that the design criteria used to
proportion the test specimens is unnecessarily
conservative. Since the one-way slabs at the
high-pressure level were damaged enough to define
closely their dynamic strengths in flexure and diagnoal
tension, it will be possible to establish definitive
design criteria for slabs for this type. The damage
sustained by the one-way slabs at the lower pressure
level was minor; however, it should be adequate to
indicate the applicability or lack thereof of these
design criteria to slabs under lower blast pressures.
Because of the nature of the damage sustained by the
801.
KEYWORD(S)
5003411
two-way slabs, which apparently resulted pPimarily from
their proximity to the crater, it will not be possible
to establish design criteria for them as well defined as
the criteria to be developed for the one-way slabs.
STRUCTURAL ELEMENTS/blast
REINFORCED CONCRETE
OFFICIAL USE ONLY
loading ;HARDTACK;