Ultrasonic Pulse Velocity Test appartus
Ultrasonic pulse velocity test:
An ultrasonic pulse velocity test is an in-situ, nondestructive test to check the quality of concrete and natural rocks. In this test, the strength and quality of
concrete or rock is assessed by measuring the velocity of an ultrasonic pulse passing through a concrete structure or natural rock formation. This test is conducted by passing a pulse of ultrasonic wave through concrete to be tested and measuring the time taken by pulse to get through the structure.
Higher velocities indicate good quality and continuity of the material, while slower velocities may indicate concrete with many cracks or voids.
Technical Specifications:
Temporal measure resolution: 83 nS
- filter passing band:20-80KHz
- amplificator gain :50dB
- minimum level of the trigger signal: 208 Mv
2 TX / RX channels,
- contact probes, freq. 55 KHz
- data saving on internal memory,
- 3" display to visualize the time of fly (T.O.F.) and the speed of waves transmission within the material,
- rechargeable internal battery,
- oscilloscope output,
- USB interface to download data.
Features of Ultrasonic pulse velocity test:
· Complying with Standard EN 12504 part. 4 / ASTM C597 / BS 1881:203
· Measuring range: 0 - 3000 μs - accuracy +/- 0,1 μs
· Selection of the ultrasonic pulse amplitude adjustable from 250 to 1000 V
· Measurement of the required time by the ultrasonic pulse to go through the tested material.
· Single or continuous acquisition mode with automatic or manual saving.
· Zero calibration with depuration of the time for the pulse to go through the probes.
· Calibration of a defined time value.
· Capacity of data acquisition, processing and filing of the test data up to 30.000 samples.
· Interface mini USB for PC connection.
· Two outlets for connection to the oscilloscope.
· Languages: English, French, German, Spanish, Italian.
· The use of the instrument is made easy because it is based on the user-friendly system.
· The standard appliance includes:
· The instrument in basic configuration in a practical palmer container.
o Two 55kHz probes with connection cables.
o Calibrating cylinder and contact paste.
o Battery rechargeable pack NiMh 4,8V > 2000m/A with low battery condition alarm.
o Anti shock case holding the unit and the accessories.
o External feeder 230V and battery charger 12V 500m/A.
· Case dimensions: 400x340x110mm
Weight: 2 kg approx
Testing procedure For Ultrasonic pulse velocity test:
Ultrasonic testing equipment includes a pulse generation circuit, consisting of electronic circuit for generating pulses and a transducer for transforming electronic pulse into mechanical pulse having an oscillation frequency in range of 40 kHz to 50 kHz, and a pulse reception circuit that receives the signal.
The transducer, clock, oscillation circuit, and power source are assembled for use. After calibration to a standard sample of material with known properties, the transducers are placed on opposite sides of the material. Pulse velocity is measured by a simple formula:
Interpretation of results:
Quality of concrete in terms of strength, homogeneity, trapped air, internal flaws, cracks, segregation, honeycombing, compaction, workmanship, and durability
can be concluded from this test. The test can also be used to evaluate the effectiveness of crack repair.Ultrasonic testing is an indicative and other tests such
as destructive testing must be conducted to find the structural and mechanical properties of the material.
Regulation and standards:
A procedure for ultrasonic testing is outlined in ASTM C597 - 09.
In India, ultrasonic testing is conducted according to IS 13311-1992. This test indicates the quality of workmanship and to find the cracks and defects in concrete.
Usage of ultrasonic pulse velocity test:
This test is recommended in some of testing done by the Indian government to certify and check construction of residential buildings.
An ultrasonic pulse velocity test is an in-situ, nondestructive test to check the quality of concrete and natural rocks. In this test, the strength and quality of
concrete or rock is assessed by measuring the velocity of an ultrasonic pulse passing through a concrete structure or natural rock formation. This test is conducted by passing a pulse of ultrasonic wave through concrete to be tested and measuring the time taken by pulse to get through the structure.
Higher velocities indicate good quality and continuity of the material, while slower velocities may indicate concrete with many cracks or voids.
Technical Specifications:
Temporal measure resolution: 83 nS
- filter passing band:20-80KHz
- amplificator gain :50dB
- minimum level of the trigger signal: 208 Mv
2 TX / RX channels,
- contact probes, freq. 55 KHz
- data saving on internal memory,
- 3" display to visualize the time of fly (T.O.F.) and the speed of waves transmission within the material,
- rechargeable internal battery,
- oscilloscope output,
- USB interface to download data.
Features of Ultrasonic pulse velocity test:
· Complying with Standard EN 12504 part. 4 / ASTM C597 / BS 1881:203
· Measuring range: 0 - 3000 μs - accuracy +/- 0,1 μs
· Selection of the ultrasonic pulse amplitude adjustable from 250 to 1000 V
· Measurement of the required time by the ultrasonic pulse to go through the tested material.
· Single or continuous acquisition mode with automatic or manual saving.
· Zero calibration with depuration of the time for the pulse to go through the probes.
· Calibration of a defined time value.
· Capacity of data acquisition, processing and filing of the test data up to 30.000 samples.
· Interface mini USB for PC connection.
· Two outlets for connection to the oscilloscope.
· Languages: English, French, German, Spanish, Italian.
· The use of the instrument is made easy because it is based on the user-friendly system.
· The standard appliance includes:
· The instrument in basic configuration in a practical palmer container.
o Two 55kHz probes with connection cables.
o Calibrating cylinder and contact paste.
o Battery rechargeable pack NiMh 4,8V > 2000m/A with low battery condition alarm.
o Anti shock case holding the unit and the accessories.
o External feeder 230V and battery charger 12V 500m/A.
· Case dimensions: 400x340x110mm
Weight: 2 kg approx
Testing procedure For Ultrasonic pulse velocity test:
Ultrasonic testing equipment includes a pulse generation circuit, consisting of electronic circuit for generating pulses and a transducer for transforming electronic pulse into mechanical pulse having an oscillation frequency in range of 40 kHz to 50 kHz, and a pulse reception circuit that receives the signal.
The transducer, clock, oscillation circuit, and power source are assembled for use. After calibration to a standard sample of material with known properties, the transducers are placed on opposite sides of the material. Pulse velocity is measured by a simple formula:
Interpretation of results:
Quality of concrete in terms of strength, homogeneity, trapped air, internal flaws, cracks, segregation, honeycombing, compaction, workmanship, and durability
can be concluded from this test. The test can also be used to evaluate the effectiveness of crack repair.Ultrasonic testing is an indicative and other tests such
as destructive testing must be conducted to find the structural and mechanical properties of the material.
Regulation and standards:
A procedure for ultrasonic testing is outlined in ASTM C597 - 09.
In India, ultrasonic testing is conducted according to IS 13311-1992. This test indicates the quality of workmanship and to find the cracks and defects in concrete.
Usage of ultrasonic pulse velocity test:
This test is recommended in some of testing done by the Indian government to certify and check construction of residential buildings.
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