Recent Advances in the Analysis, Measurement, and Properties …
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diamond suspension and finished with 0.05-micron alumina paste. The samples were
cleaned in an ultrasonic cleaner between each polishing step. The microstructure of
the samples was then analyzed using a Hitachi SU3200 scanning electron microscope
(SEM).
Reduced-Scale Torch Fire Test Setup
The experimental setup used in the reduced-scale torch fire (jet fire) testing is provided
in Fig. 1. The setup is composed of a 7.6 cm (3.0 in.) diameter jet burner that is located
at 8.89 cm below a 30.2 m × 30.2 cm sample that rests beneath an instrumented 40.6 m
× 40.6 cm steel plate.
The sample and steel plate are supported by a steel Unistrut frame with Durock
cement board to redirect hot gases away from the back of the sample and steel plate.
The edges of the sample rest on top of a 2.54 cm (1.0 in.) thick Thermal Ceramics
Superwool 607 high temperature ceramic fiber board to thermally isolate the sample
from the steel Unistrut frame. The edges of the steel plate and sample are also
insulated with the 2.54 cm (1.0 in.) thick ceramic board. With this setup, heating
of the instrumented steel plate only occurs through the heat transmitted through the
sample due to the impinging jet flame. The propane gas flow rate into the jet burner
Fig. 1 Reduced-scale torch fire (jet fire) test setup. (Color figure online)
205
diamond suspension and finished with 0.05-micron alumina paste. The samples were
cleaned in an ultrasonic cleaner between each polishing step. The microstructure of
the samples was then analyzed using a Hitachi SU3200 scanning electron microscope
(SEM).
Reduced-Scale Torch Fire Test Setup
The experimental setup used in the reduced-scale torch fire (jet fire) testing is provided
in Fig. 1. The setup is composed of a 7.6 cm (3.0 in.) diameter jet burner that is located
at 8.89 cm below a 30.2 m × 30.2 cm sample that rests beneath an instrumented 40.6 m
× 40.6 cm steel plate.
The sample and steel plate are supported by a steel Unistrut frame with Durock
cement board to redirect hot gases away from the back of the sample and steel plate.
The edges of the sample rest on top of a 2.54 cm (1.0 in.) thick Thermal Ceramics
Superwool 607 high temperature ceramic fiber board to thermally isolate the sample
from the steel Unistrut frame. The edges of the steel plate and sample are also
insulated with the 2.54 cm (1.0 in.) thick ceramic board. With this setup, heating
of the instrumented steel plate only occurs through the heat transmitted through the
sample due to the impinging jet flame. The propane gas flow rate into the jet burner
Fig. 1 Reduced-scale torch fire (jet fire) test setup. (Color figure online)