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In the following discussion, the eigensolution properties summarized in the example are analytically shown to be true for general HPGs.
To sum up, there are always fourteen natural frequencies with multiplicity 2 for the two-stage HPGs, and the corresponding vibration modes are the radical translational modes.
In this study, a three-dimensional dynamic model of the two-stage HPGs with consideration of axial and radical deformations is established.
This comparatively poor performance of GG with respect to HPG4 and HPG8 was due to the increased interfacial interaction in the case of the HPGs as the degree of substitution increased.
The reinforcing effect of the HPGs was observed as an increase in the tensile strength, providing greater reinforcement than GG.
Observations made regarding the flexural strength of the composites add further credence to the reinforcing effect of the HPGs when compared with GG.
THE HYDRAULIC PULSE GENERATOR (HPG) was developed as a way of fragmenting and excavating hard rock .
HPG systems built to date have used water as a working fluid.
Effective from 2 November 2011, HPG Services acquired BGM's assets.
In conjunction, Bill Mercer, the founder of BGM and his experienced team, will join HPG Services with immediate effect.
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