Zibo Yuhai Electronic Ceramic Co., Ltd.
Address : No.57 Chuangye Road, Development Area Boshan, Zibo City, Shandong Prov. P.R. of China
Tel : +86-0533-4230012
Fax : +86-0533-4231700
Email : sales@zbyuhai.com

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Custom Tangential Tube

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Product Description

Parameters

Piezo- ceramic tangential tubes

The derived stress distribution formula in terms of the two layer cylindical tranducer revealed the circumferential stress of the piezo tube transducer is greater than the radial stress, according the scientific experiments of acoustic oil well logging.

The tangentially polarized piezoelectric ceramic tube is difficult to achieve full polarization and has a slightly higher polarization intensity, but when it works in the radial vibration mode (low frequency), its electromechanical coupling coefficient is k33, so its sensitivity is higher, and because the sound velocity V3 is higher, the resonance frequency can be lower under the same diameter condition.

Application: oilfield detection, ultrasonic pickups

Piezoelectric Ceramic Material: PZT-53 (modified PZT-5)

Piezoelectric elements technical data:
Dimensions:	diameter 42mm, wall thickness 2.5mm, height 35mm
Thickness Frequency Fr:	21.5KHz ± 1.5 KHz
Mechanical Coupling coefficient K33	＞0.6
Dielectric Loss tg δ:	< 2%
Static capacitance Cs:	2600pF±12.5%

Typical soft PZT characteristics include:

Wide range of frequencies in transmit and receive (sub-audible, audible, ultrasonic)
High output, low drive material
High frequency, fast response time
High sensitivity for active or passive use
Ability to use with low voltage or high voltage drive circuits
Good mechanical and acoustic coupling
Wide variety of shapes and sizes that can be customized to meet specific requirements and applications
Wide variety of compositions that can be selected to meet specific requirements and applications
Quality of each PZT component is ensured by a rigorous testing regimen. Characteristics such as frequency, capacitance, dissipation, coupling, d33 and mechanical properties are measured and verified against our / customer provided specifications.

Typical soft PZT applications include:

Undersea exploration (sonar, beacons, imaging, current meters)
Aerospace (gyroscopes, accelerometers, level sensing)
Medical products (Doppler blood flow, oncology therapeutics (high intensity focused ultrasound), imaging, level sensing, intra-operative tools for ophthalmology (phacoemulsification), dental descaling, general surgery, tissue ablation, medication delivery, hearing enhancement, bubble detection)
Consumer products (ultrasonic toothbrushes, jewellery cleaners, contact lens cleaners, computer hard drives, touch screen displays, integrated, ultra-thin speakers and cosmetic enhancement)
Industrial and Commercial (flow and level sensors, ultrasonic cleaning, ultrasonic welding, intrusion alarms, fabric needle positioning, solder dispensing, machine vibration monitoring, bubble detection, sonochemistry for improved chemical mixing)
Telecommunications (optical switching of telecom lines, buzzers and alarms, Haptics feedback, mobile phone cameras)
Automotive (power seat controls, reversing/collision avoidance sensors, anti-knock sensors)
Scientific research (nano positioning stages and analytical tools, scanning pro

Typical value of piezoelectric ceramic materials performance
"Soft" PZT materials
Properties			PZT-51	PZT-52	PZT-53	PZT-5H	PLiS-51	PMgN-51	PSnN-5
Dielectric Constant	ɛr3		2200	2400	2600	3200	2000	3800	1600

Coupling factor	K_P		0.62	0.63	0.64	0.68	0.62	0.64	0.6
	K₃₁		0.35	0.35	0.36	0.38	0.35	0.35	0.35
	K₃₃		0.68	0.7	0.7	0.76	0.7	0.7	0.68
	K_t		0.5	0.5	0.5	0.52	0.52	0.52	0.5
Piezoelectric coefficient	d31	10^-12m/v	-186	-204	-227	-275	-197	-270	-170
	d33	10^-12m/v	500	520	550	620	450	600	400
	g31	10^-3vm/n	-9.6	-9.8	-9.9	-9.7	-11.1	-8	-12
	g33	10^-3vm/n	25.6	24.5	23.9	22	25.4	18	28
Frequency coefficients	N_p		1980	1980	1960	1900	1920	1980	2000
	N₁		1451	1451	1437	1393	1407	1451	1466
	N₃		1900	1900	1755	1550	1925	1800	1825
	N_t		2150	2150	2150	2100	2100	2100	2100
Elastic compliance coefficient	S^e₁₁	10^-12m²/n	16.7	17	17.4	18	18	18	16.6
Machanical quality factor	Qm		80	75	75	70	80	70	85

Dielectric loss factor	Tg δ	%	2	2	2	2	2	1.8	2
Density	ρ	g/cm³	7.6	7.6	7.6	7.5	7.5	7.6	7.5
Curie Temperature	Tc	°C	270	270	270	230	345	270	350
Young's modulus	Y^E₁₁	<10⁹N/m³	60	59	57.5	56	56	56	60
Poison Ratio			0.36	0.36	0.36	0.36	0.36	0.36	0.36