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January
11,
1978
WT 79-0027A
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v Enclosed is the outline of the acoustic emission experiment
5 that you requested during our meeting on December
4,
1978.
If
I can be of any further help,
please
let me know.
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Brown
H.
C.
McDonald
E.
K. Miller
A.
J.
Poggio
C.
A.
Tatro
R.
S .
HAWKE
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Engineering Research Division
Electronics Engineering Department
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Approved For Relea
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OUTLINE OF ACOUSTIC EMISSION EXPERIMENTS PERFORMED
WITH A PERSON REPUTED TO HAVE PARANORMAL
METAL BENDING ABILITIES
R.
S.
Hawke
Lawrence Livermore Laboratory,
University of California
Livermore,
CA 94550
January
11,
1979
ABSTRACT
This outline summarizes the design,
use and results of an
acoustic emission experiment intended to investigate para-
normal metal bending phenomena.
The experiment was designed
not merely to verify or refute the occurrence of paranormal
metal bending,
but rather to gain some insight into the
phenomena occurring
in
a test specimen while bending was
attempted.
Although large amounts of bending were not
observed during the experiments,
acoustic emission signals
typical of single grain or grain boundary fracture with and
without evidence
of plastic strain- induced emission were
recorded during periods
of time when there was no contact
with the test specimens.
These results are consistent with
those of Crussard
(1).
Further experiments are warranted.
IN STRICT CONFIDENCE
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a.
b
.
c
.
Tuned
to
1600 kHz
at end of band
(no broad-
cast
station)
.
Output connected to logic probe and auxiliary
audio input to A.E.
video recorder.
Background EM effects,
i.
None.
4.
Laser beam bend detector.
a.
HeNe
laser beam reflected off bottom of spoon
bowl and down onto table with target.
b.
Position of beam on target changes with spoon
bending.
c.
Beam position on target recorded by vidicon
TV system.
Experimental protocol
A.
Spoon and vise could not be moved during experiment.
Spoon could be lightly touched by subject
for short
periods of time but subject was informed that touching
obliterated any useful result that might be present
while touching occurred and hence was to be minimized
if not totally avoided.
1.
Logic probe connected to electric
field detector
provided record of spoon touching.
A.E.
System provided record of noise
if the spoon
was rubbed.
TV vidicon provided record of hand or finger
in
proximity of
spoon and vise.
B.
.
3.
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C.
Experimental sessions were about
1 hour long.
D.
Sessions had subject and
or
3 observers present.
IV.
Experimental results:
A.
At least
4 clear instances of A.E.
events occurred with
one subject during one session.
1.
Records verified events occurred while spoon and
vise were untouched.
2.
Sufficient bending to move
the reflected laser
beam was not observed.
a.
Normal elastic bending
(without A.E.)
prior
to plastic deformation
(with A.E.)
would have
caused an observable displacement of the
laser beam.
3.
The events were typical of
single grain or grain
boundary fracture with and without evidence of
plastic
strain induced emission following.
(See
Figure
3A and
3B)
.
4.
No anomalous A.E.
events were recorded during dry
runs
.
B.
Fewer but similar results were obtained with one other
subject.
V.
Conclusions
A.
Acoustic emissions were recorded in the presence
of
a
person who claimed the ability to paranormally bend
metal.
B.
Elastic deformation was not observed.
C.
Observable plastic deformation did not occur.
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D.
Further experiments are warranted.
E.
Future experiments should be more sensitive to minute
bending.
F.
Other materials and crystalline structures should be
investigated
.
References
(1)
C.
Crussard and
J.
Bouvaist,
Memoires Scientifiques
Revue Metallurgie,
p.' 117,
February 1978.
(2)
The assistance of
A.
E.
Brown and
C.
A.
Tatro through-
out the design,
implementation and interpretation of
the experiments,
is greatly appreciated.
Approved Foij^
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Approved For Release 2002/05/17
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Figure
3A
and
3B