INDUSTRY COMPONENT

Piezoelectric Element

Piezoelectric element converts electrical energy to mechanical vibrations for ultrasonic applications.

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Component Specifications

Definition
A piezoelectric element is a specialized component that utilizes the piezoelectric effect to generate ultrasonic vibrations when subjected to alternating electrical signals. In ultrasonic transducer arrays, these elements are precisely arranged to create controlled acoustic fields for applications like medical imaging, industrial testing, and material processing. The element typically consists of polarized ceramic materials that expand and contract in response to voltage changes, producing high-frequency mechanical oscillations.
Working Principle
The piezoelectric effect causes certain materials to generate an electric charge in response to applied mechanical stress (direct effect) or to deform when an electric field is applied (converse effect). In ultrasonic applications, the converse effect is utilized: alternating voltage causes the material to oscillate at ultrasonic frequencies, producing sound waves.
Materials
Lead zirconate titanate (PZT) ceramics, barium titanate, quartz crystals, or polyvinylidene fluoride (PVDF) polymers. PZT-5A or PZT-5H are common grades with high piezoelectric coefficients.
Technical Parameters
  • Impedance 50-500 Ohms
  • Dimensions Custom (typically 5-50 mm diameter, 0.5-5 mm thickness)
  • Capacitance 100 pF - 10 nF
  • Frequency Range 20 kHz - 10 MHz
  • Curie Temperature 150-350°C
  • Coupling Coefficient 0.6-0.7
Standards
ISO 18563-1, DIN EN 12668-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Piezoelectric Element.

piezoelectric element ultrasonic transducer PZT ceramic piezoelectric effect ultrasonic sensor NDT testing medical imaging transducer vibration generator Piezoelectric Element in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Ultrasonic Transducer Array

A precisely arranged assembly of multiple ultrasonic transducers that generates and focuses ultrasonic waves for cleaning applications.

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Sound Generator

An electronic or electromechanical device that produces audible warning signals as part of an alarm system.

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Transducer Array

A structured arrangement of multiple transducer elements designed to emit and receive ultrasonic signals in a coordinated manner.

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Engineering Analysis

Risks & Mitigation
  • Mechanical cracking from overvoltage
  • Depolarization at high temperatures
  • Impedance mismatch causing energy loss
  • Aging effects reducing sensitivity over time
FMEA Triads
Trigger: Electrical overstress or thermal shock
Failure: Cracked ceramic element leading to complete loss of function
Mitigation: Implement voltage limiters, thermal management, and mechanical damping in housing design
Trigger: Moisture ingress or chemical exposure
Failure: Degradation of electrodes and reduced piezoelectric performance
Mitigation: Apply protective coatings (epoxy, parylene) and use hermetic sealing for harsh environments
Trigger: Mechanical fatigue from continuous operation
Failure: Gradual reduction in output amplitude and sensitivity
Mitigation: Design with safety factors, use fatigue-resistant materials, and implement periodic calibration

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Frequency tolerance ±2%, dimensional tolerance ±0.1 mm, capacitance tolerance ±10%
Test Method
Impedance analysis, laser vibrometry for displacement measurement, acoustic output testing per IEC 61161

Buyer Feedback

★★★★☆ 4.5 / 5.0 (20 reviews)

"The Piezoelectric Element we sourced perfectly fits our Computer, Electronic and Optical Product Manufacturing production line requirements."

"Found 40+ suppliers for Piezoelectric Element on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Piezoelectric Element is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

What is the main function of a piezoelectric element in ultrasonic transducers?

It converts electrical signals into high-frequency mechanical vibrations to generate ultrasonic waves for imaging, measurement, or processing applications.

How do temperature changes affect piezoelectric element performance?

Performance degrades near the Curie temperature, and thermal expansion can alter resonant frequencies. Temperature-stable formulations like PZT-8 are used in demanding environments.

Can piezoelectric elements be used for both transmission and reception of ultrasound?

Yes, they operate bidirectionally: generating ultrasound when energized (transmitter mode) and producing electrical signals when receiving ultrasound waves (receiver mode).

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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