Tuesday, October 26, 1982
Daily Nebraskan
Page 7
fiII::T ' f-'-T, - -- 1U I "
Staff Photo by Jane Knapp
Assistant professor William Weins stands next to
"Salvage I," a handmade machine build from
salvage materials. "Salvage 1" aids in the research
of atomic structures.
UNL professor creates 'Salvage T
By Jim Anderson
A machine built almost entirely from salvaged
materials and nicknamed "Salvage I" is the newest addi
tion to the UNL College of Engineering and Technology.
But although the machine is built of salvaged material,
it is state-of-the-art equipment, according to William
Weins, assistant professor of mechanical engineering.
Weins, who completed the machine last week, said it is
one of only jialf a dozen in the country.
The machine measures the energy required to make
atoms move in metal structure, he said. It can indicate
the locations of atoms in a structure as well as how
strongly they are bound in their positions. .
Weins said the machine was built primarily to verify
the existence of diplons - newly discovered atomic struc
tures. He said he' discovered diplons experimentally while
teaching at Iowa State University a few years ago. The
machine will be used in other experiments as well, the
most promising of which seems to be the process by
which metals dampen the energy put into them, he said.
"To buy a machine like this, " Weins said, "would
cost about forty or fifty thousand dollars." However,
because his machine was built mostly from salvaged
materials, the final cost was about $5,000 Weins said.
For this reason, he said, it is jokingly called "Salvage I"
by those involved in its construction.
"We built this (machine) around the materials we had
at the time," Weins said. "A lot depends on the ingenuity
of your shop people." The machine probably will last
a long time, he said.
Weins said he worked with a similar machine at Iowa
State University in Ames, but that it wasn't of as high
a quality as the one he built.
"A key problem is vibration," he said. Because of the
delicate nature of the measurements taken by the
machine, common vibrations - casued by trains or cars
outside or by people walking inside - can create inaccur
acies, Weins said. He added that thanks to the ingenuity
of people in the mechanical engineering department, he
managed to take care of that problem.
Tbe major portion of the machine rests on springs
obtained from an auto farts store. The machine's base,
on which the springs rest, weighs 5,000 pounds.
The machine works by putting small amounts of stress
on metal suspended by a pendulum in a container of
liquid nitrogen. It can be used to study defects in metals
and their composition, as well as how metals fail. Weins
said the most promising area of study, however, is in
metal damping.
Because of the 'basic nature of the experiments in
which the machine can be used, Weins said it isn't of much
interest to private industry right now.
"It's too far away from a practical application of the
information it provides, but it does enhance fundamental
knowledge," he said.
Weins said he hopes the new machine will help attract
more research funding to the college.
1
Colleges list senior check guidelines
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Junior-Senior checks are offered by the UNL Office of
Registration and Records. This service is provided at the
request of second-semester juniors and all seniors.
"There are some colleges which have set up guideline
for this check," said Shirley Thomsen, assistant director
of Registration and- Records. "Those who don't' have
special guidelines may come to the Administration Build
ing, Room 208, at the information window."
Students in the Arts and Sciences, Home Economics
and Teachers College and in the Journalism School must
complete 80 credit hours before applying. Students in the
College of Business Administration must complete 85
hours before applying.
Students in the College of Agriculture must accumulate
between 75 and 92 hours. After that, students must
obtain an analysis of graduation requirements form which
is available at Agricultural Hall 101. The form is to be
completed by the student and filed with the assistant
dean.
Students in the College of Architecture must complete
both 75 hours and Architecture 340 before contacting
their adviser for a graduation check.
In the College of Engineering and Technology, students
must complege 100 credit hours before contacting their
adviser and completing an analysis of graduation require
ments form. '
Those students majoring in criminal justice and social
work must go through the CP ACS (College of Public
Affairs and Community Service) in Neihardt Residence
Center.
"We hardly ever have a lull in doing these things,"
Thomsen said. "Many records are handled three times be
fore the students graduates."
"This service is very helpful because lots of times a
student has presented a class on their form which isn't
even in our records," she said. .
For additional information, students may refer to a
academic services handbook or a second semester student
handbook.
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