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  • Mar
    30
    Touch screen for piezoelectric ceramic applications

    Touch screen (also known as "touch screen", "touch panel") is an inductive liquid crystal display device that can receive input signals such as contacts. When a graphic button on the screen is touched, the The haptic feedback system can drive various connected devices according to a pre-programmed p

  • Mar
    30
    Non-destructive Testing of Pressure Vessel——Non-destructive test of Automobile and Railway Tanker

    Abstract: Summarize the defects and possible non-destructive testing methods used in the manufacture and use of automobiles and railway tankers, including radiation, ultrasound, magnetic particles, penetration, magnetic leakage, acoustic emission, and magnetic memory testing, etc., and introduce eac

  • Mar
    26
    Piezo effect and piezoelectric acoustic sensor

    Acoustic emission signals are propagating in the solid media contain characteristic information of acoustic emission sources. To use this information to reflect material characteristics or the development of defects, it is necessary to receive such acoustic emission signals on solid surfaces. Acoust

  • Mar
    23
    Parameters of piezoelectric materials and piezoelectric equations (4)

    Four. Classification of piezoelectric materials1. The first type of piezoelectric material piezoelectric single crystal .This is a naturally occurring or artificial single crystal ferroelectric material with anisotropy. Its piezoelectric effect is based on the composition of the crystal structure Ca

  • Mar
    23
    Parameters of piezoelectric materials and piezoelectric equations (3)

    Parameters of piezoelectric materials and piezoelectric equations (3)(11)Mechanical quality factor QmWhen the PZT material piezo ceramic is used for resonance vibration, it is necessary to overcome the internal mechanical friction loss (internal consumption), and when there is a load, it is necessar

  • Mar
    20
    Parameters of PZT materials and piezoelectric equations (2)

    Second, the piezoelectric parameters3. There is a complicated relationship between the piezoelectric parameters of piezoelectric materials, such as e = dE and E = -he as described above. Comparing them seems to give d = -1 / h, but it is not true in practice. Because the former is given under the co

  • Mar
    20
    Parameters of piezoelectric materials and piezoelectric equations (1)

    First, the piezoelectric equation.For the performance of piezoelectric materials, we have the following four considerations: 1. Piezoelectric materials are elastomers, which obey Hooke's law in terms of mechanical effects, that is, the elastic relationship between stress τ and strain e: τ = ce Or e

  • Mar
    18
    Application of piezoelectric ceramics in structural health monitoring

    PZT can not only be used to make various piezoelectric products, but in recent years PZT is gradually applied to structural damage detection. According to the positive and inverse piezoelectric effects of piezoelectric materials, PZT piezoelectric ceramics can be used as both driving and sensing ele

  • Mar
    18
    Application of Piezo Ceramics Used for ultrasonic non-destructive testing

    The development history and characteristics of ultrasoundAcoustics, as a branch of physics,it is a science that studies the occurrence, propagation, reception, and effects of sound waves. Before 1940, there were only single-crystal piezoelectric materials, which made ultrasonic wave not widely used.

  • Mar
    16
    Research on Displacement Performance of Multilayer PZT Chip Piezoelectric Ceramics Microactuator (2

    Comparison of density, dielectric constant and piezoelectric coefficient of PZN-PZ-PT ceramic film obtained by casting method and dry pressing method:

  • Mar
    16
    Research on Displacement Performance of Multilayer PZT Chip Piezoelectric Ceramics Microactuator (1)

    Piezoelectric ceramic micro-actuators are new type solid-state actuators made using the inverse piezoelectric effect. They are widely used in high tech fields such as precision optics, micromechanics, microelectronics, and computer applications. These applications require piezoelectric ceramic devic

  • Mar
    12
    Preparation of piezoelectric ceramic / polymer composite cylindrical transducer (1)

    The transducer array are the key components in the sonar system. It is a device that realizes the mutual conversion of electro-acoustic energy. The performance of the transducer and the transducer array mainly depends on the performance, structure and manufacturing process of the transducing materia

  • Mar
    12
    Resonant performance of cylindrical piezoelectric transducer(2)

    The design of this cylindrical transducer is to realize the electro-acoustic conversion by using the thickness vibration of the 1-3-2 composite material element to obtain the uniform directivity in the horizontal direction. The design frequency of the transducer is 74kHz. In order to analyze and pre

  • Mar
    09
    d33 parameter test device design of piezo ceramics

    This design uses a single-chip microcomputer as the control and parameter calculation circuit. The signal generator outputs a continuous analog excitation frequency sweep signal, which is applied to the piezoelectric ceramics ,which detects the voltage and current amplitude of the analog signal, con

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