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The specimens 10mm wide standardized for our other equipments can also be used in the present one. This means that only one specimen is needed to measure different kinds of elastic constants including the modulus of rigidity.
In the case of modulus of rigidity, the frequency of vibration is usually twice as much
of that of Young's modulus. We can afford of supplying enough wide range of frequency for that because of enough experiences obtained by the development of our JE series equipments.
As well as the JE series, the specimen setting is very easily done by just placing it on the crossed wires. In such a way, our JG series to measure the modulus of rigidity are certainly stepping far ahead of the conventional "Pseudo-free-vibration method" so far developed by other manufacturers.
Similar to the JE series, the present series also prepare
a compact, computer built-in type exclusively for room temperature measurement (JG-RT),
a high temperature manual type (JG-HTm), which requires manual opertion in temperature setting and measurement,
and a computer controlled automatic high temperature type (JG-HT).
The free resonance type machines need the highest skill and good understanding in operation above 600, since the measurement becomes difficult there.
Like the JE series,the compact and low price part of JG for room temperature measurement can be used for the precision calibration of the EG-HT equipments for high temperature use.
if-qs for EG-HT Method of measurement: free holding characteristic vibration type Driving system: contactless electro-magnetic driving Range of applied vibration frequency: 300Hz ~ 10,000Hz Detection system: by contactless detection of vibration sound Range of detectable frequency: 600Hz ~ 20,000Hz Materials to be measured: metals, ceramis, high polymers, glass, bricks, and etc. Standard specimen size: (in mm units) JG-RT:slab of 50~100L ~ 10~25W ~ 1~3T JG-HT:slab of 50~ 70L ~ 10~25W ~ 1~3T Electric furnace for JG-HT: maximum temperature; 1000 (special order
for higher temperature use is possible) OptionsFThe measuring part of another series equipment can be attached. Optional attachment of other functions and inquiries on other kinds of improvement are welcome.
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