The expandable material can include piezoelectric, electrostriction, magnetostrictive, or piezomagnetic material.
This property is known as electrostriction or inverse piezoelectricity.
The piezoelectric/electrostriction device (12) is integrally formed on the first sheet-like portion (6) by a film formation method.
Further, when the electrical conduction is interrupted, the electrostriction actuator element (10A) tries to return to the original state, and this causes the top section (1a) to displace toward the lower original position.
At least one polymeric web is activated upon application thereto of an electric field and exhibits electrostriction by rotation of polar graft moieties within the polymeric web.
There is provided an inspection method for inspecting a piezoelectric/electrostrictive actuator including a piezoelectric/electrostrictive body and at least two electrodes.
Also, provided is a process for projecting sonic waves using the electrostrictive driving device (16) of this invention.
Electrostrictor material is used as transducer elements in an ultrasonic array comprising bias and signal dimensions.
Thus, the method can inspect the piezoelectric/electrostrictive actuator with a high accuracy without disassembling or destroying the actuator and without performing actual drive as a product.
The provided invention is a novel electrostrictive driving device (16) which comprises a sonic wave projector element having alternating electrodes (22) and polymer material film layers (20).
The exciter includes an electrostrictive bender element (13) including at least one layer of electrostrictive material such as lead magnesium niobate titanate (PMNT).
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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