On the hasis of the reason that the offshore oil development areas in the northern South China Sea are at greater depth,more hazardous conditions and distance from shore, the methods and technologies used in coastal w...On the hasis of the reason that the offshore oil development areas in the northern South China Sea are at greater depth,more hazardous conditions and distance from shore, the methods and technologies used in coastal waters are notfeasible because of the higher risk of losing investigation equipment or facilities. A series of methods and technologiesfor offshore fouling investigation that have been successfully applied is given in detail and it is hoped that theexperience can be helpful for further studies.展开更多
A new method is described to measure the dynamic shear modulus of underwater acoustic structure materials in a small anechoic water tank by using a broadband parametric source, a precise coordinate installation and te...A new method is described to measure the dynamic shear modulus of underwater acoustic structure materials in a small anechoic water tank by using a broadband parametric source, a precise coordinate installation and techniques of signal processing in the frequency range of 20 kHz - 100 kHz. The typical size of material samples is 500×500 mm2. Basic principles, experiment installation and measured results are also presented展开更多
文摘On the hasis of the reason that the offshore oil development areas in the northern South China Sea are at greater depth,more hazardous conditions and distance from shore, the methods and technologies used in coastal waters are notfeasible because of the higher risk of losing investigation equipment or facilities. A series of methods and technologiesfor offshore fouling investigation that have been successfully applied is given in detail and it is hoped that theexperience can be helpful for further studies.
文摘A new method is described to measure the dynamic shear modulus of underwater acoustic structure materials in a small anechoic water tank by using a broadband parametric source, a precise coordinate installation and techniques of signal processing in the frequency range of 20 kHz - 100 kHz. The typical size of material samples is 500×500 mm2. Basic principles, experiment installation and measured results are also presented
