Horizontal
and Vertical Wave-Propagation Velocities and Natural Frequencies of Human
Bodies by S-Wave and P-Wave
Phuong H.V. Truong*, Ph. D., P.E.
Independent Research Engineer;
Huntington Beach Ca 92647, USA.
*
Abstract:
Horizontal
and vertical wave-propagation velocities and natural frequencies of human
bodies by shear wave (S-Wave) and compression wave (P-wave), respectively, increase with the increase in the volume of
air in lungs and in other parts of the bodies, e.g. the oxygen and nitrogen
volumes in blood, the physiological dead space, the tidal volume (TV), the total amount of water in the
body (TBW), and specific gravity of
bones in human bodies; and with the decrease in the body weight and body
height, the body mass index (BMI)
and the body surface area (BSA). The
vertical wave-propagation velocity and the vertical natural frequency of the
human bodies by compression wave (P-wave) increase with the Poisson’s ratio of
the human bodies.
Wave-propagation velocities and natural frequencies of human
bodies also very slightly increase with the increase in the temperature of the
body and the sodium of the human blood (HB).
Human bodies have been logically considered as the mixtures of Bone-Air-Water (BAW) for the analyses.
For the same BMI, horizontal and
vertical body natural frequencies for men are generally about 1.2 Hz (or 12.5%)
and 1.8 Hz (or 7.3%) higher than those for women due to the higher values of
the muscle weights, bone weights, lung volume, and total body water (TBW) for men, respectively.
Horizontal
and vertical health-frequency factors (HFFs)
have been introduced in order to emphasize and easily indicate the health level
of each person in horizontal and vertical directions, respectively. The higher
the positive health-frequency factor, the healthier and much happier person or
stronger human antenna is.
Keywords:
Wave-propagation velocity,
natural frequency, TBW, BMI, lung capacities, BSA, Poisson’s ratio.
More information could be found on the following two websites
1. http://phuonghvtruong.altervista.org/
2. https://sites.google.com/site/phuonghvtruong/home.
Thank you for your supports. Thanks.
Best wishes to everyone!
More information could be found on the following two websites
ReplyDelete1. http://phuonghvtruong.altervista.org/
2. https://sites.google.com/site/phuonghvtruong/home.
Thank you for your supports. Thanks.
Best wishes to everyone!