The
students tested a variety of commercial adhesives, mainly
epoxies, and prepared control samples in air on metal fixtures
suitable for strength testing at the community college where
students were enrolled in a Strength of Materials engineering
class. Adhesives were applied to rocks and to testing fixtures.
Adhesives were applied in air and under water. Samples were
deployed in seawater for life tests. The high school students
played the role of technicians and assisted the cadets, who
were the project engineers, in the laboratory. The laboratory
was held in a chemistry lab, with an adjacent meeting room
with chairs and a blackboard. The students gathered first
in the meeting room to receive the lab instructions. The lab
handouts are linked above right. The students gathered again
at the end of the lab to discuss what they had done and what
should be done next. Sometimes there was a gathering after
about an hour in the lab to discuss procedures or solutions
to a difficulty. Neither the lab instructor or the students
knew which adhesives would work or what difficulties would
occur in mixing or applying them. |