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Article No. VK-10300

Lamb Wave Set

Set including various Lamb wave combinations for investigating the frequency-dependent propagation velocity of ultrasonic waves in a thin glass plate (Lamb waves)

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Description

With the set the frequency-dependent propagation velocity (dispersion) of ultrasonic waves in a thin glass plate (Lamb waves) can be measured. The set contains several Lamb wave combinations (LW1-KW7), each consisting of a glass plate and two angle beam delay lines. One of the delay lines is adhered to the glass plate and the other is free. Together with an ultrasonic probe (order no. 10151, 10152, 10154) the delay lines form angle beam probes which allow an oblique ultrasound coupling into the glass plate. The delay line angles and the plate thicknesses are selected in such a way, that in combination with one of the ultrasonic probes Lamb wave modes can be selectively excited and amplified. The group velocity of the excited Lamb wave can be determined by varying the distance between the probes and measuring the associated change of time of flight in the glass plate (transmission measurement).

Technical Data

Angle beam delay lines
• Material: acrylic (cL ≈ 2700 m/s)
• Incidence angle: 12°, 15°, 25°, 28°, 32° oder 35°

Plate structure
• Material: glass (E = 73 kN/mm², ρ = 2.52 g/cm³, µ = 0.22)
• Thickness: approx. 1 or 1.3 mm

Spare Parts
Artnr. Bezeichnung
10311 Lamb wave combination LW1 (12° / 1 mm)
10312 Lamb wave combination LW2 (15° / 1 mm)
10313 Lamb wave combination LW3 (28° / 1 mm)
10314 Lamb wave combination LW4 (32° / 1 mm)
10315 Lamb wave combination LW5 (35° / 1 mm)
10316 Lamb wave combination LW6 (25° / 1,3 mm)
10317 Lamb wave combination LW7 (32° / 1,3 mm)
Downloads

(Manuals and Software for customers only)

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