Strength test materials such as steel, concrete, and composites. Use our data acquisition systems for steel quality control. Our RA2300MKII and RM1102 Digital Oscillographic Recorders are excellent for X-Y recorder material properties testing.
STEEL QUALITY CONTROL
Flaw Detection in Steel Plate and Pipe
Digital oscilloscope recorders are useful for flaw detection in quality control of steel plates and pipes.
High precision and reliability are required for long-life products used in plants such as steel pipes and seamless pipes. Flaw detection data is used to detect internal defects (bubbles, nonmetallic inclusions) in thin steel sheets and during wire quality control.
Quality requirements are becoming more strict each year for surface scratches and fissures in deformed bars used for rebar for high rise buildings. It is difficult to detect scratches on the surface with irregularly shaped bars in products, but flaw detectors with eddy current technology have been developed and are actively used in quality control.
The RA Series is useful for data recording for rolling quality confirmation.
Automatic Recording Image of Bar, Wire, Steel Pipe (Hot Rolling/Cold Rolling Process)
Recording Image of Plate Wave Flaw Detection
A plate wave flaw detection device with a tire probe has been used conventionally to detect on-line internal defects (bubbles, nonmetallic inclusions) in thin steel plates. This is an example of flaw detection with a probe enclosed in a tire. The ultrasonic wave hits the metal plate obliquely and a plate wave is generated across the width of the plate. The reflected signal from the flaw is received and the flaw is detected.
Recording Image of Deformed Bar Flaw Detection
This image shows the output record of an eddy current flaw detection device where two sensing coils are placed counteracting the nodes of the deformed steel bar and the difference in output is used to detect points of variation caused by flaws.
Ultrasonic Testing (UT) and Acoustic Emission Testing (AT)
Ultrasonic flaw detection testing (UT) detects internal flaws with ultrasonic waves using the same principle as active sonar (internal faults are detected by transmitting ultrasonic waves and receiving reflected echoes from the internal defect). Acoustic emission testing (AT) uses the same principle as passive sonar (it detects ultrasonic waves generated from internal defects during growth).
UT is generally used for detecting internal defects in steel plates and steel pipes In the UT method, in order to detect defects at a more accurate position, the phased array method in which a large number of transducers are arrayed and an arrangement in which the transmitting probe and the receiving probe are arranged in a face-to-face manner as well as the diffracted wave generated by the defect are used. The TOFD (Time of Flight Diffraction) method is also used from the flaw detection image.
Did You Know?
The RA Series simultaneously measures voltage, current, control timing, vibration, rotation, pressure and thermocouples directly from sensors. HDD data recording and higher process computer communication is possible.
X-Y RECORDER MATERIAL PROPERTIES TESTING
Digital oscillographic recorder proves useful in strength tests for materials such as steel, concrete and composites.
Creep, compression strength, and tensile strength are all types of material strength tests. X-Y recording can display and record 2 physical variables such as displacement and load as measured by a tension compression testing machine.
The RA2300MKII and RM1102 Digital Oscillographic Recorders include an”X-Y recorder mode” allowing for repeated overwriting, high resolution recording to paper output and general data acquisition.
In addition, the RA2300MKII direct connects to strain gauges, pressure sensors, and displacement sensors.
Material Strength, Compression Test
Material Strength and Tension Test
Material Strength and Compressive Creep Test
Materials Testing in X-Y Recorder Mode
High Temperature Creep Test
Creep is a problem that affects materials used in power plants and chemical plants operated at high temperatures over long durations by gradually advancing plastic deformation and microstructural change, carbide coarsening and holes and ruptures. Test pieces held at a high constant temperature are subject to a tensile force that starts below the yield point to measure strain and break point and to evaluate overall material properties.
Creep tests and creep rupture tests were performed at high temperatures to find the creep characteristics of heat-resistant steel weld metal for oil reaction tower (550 °C), creep characteristics of 11% Cr steel for a steam turbine (650 °C) and creep resistance performance testing of Ni-base superalloy steel weld metal (750 °C).
Did You Know?
The RA Series simultaneously measures voltage, current, control timing, vibration, rotation, pressure and more directly from sensors. The RA2300MKII 8 physical slots with 16 channels available for plug-in cards including those listed in the table to the left.
Item | Model | Specifications |
---|---|---|
2CH High Resolution Amp | AP11-101 | ±100mV ~ ±500V, A/D res 16bit 10ìs |
2CH High Speed Amp | AP11-103 | ±100mV ~ ±500V, A/D res 12bit 1ìs |
Event Amp | AP11-105 | Input: 8 logic (Voltge/Contact) |
2CH TC-DC Amp | AP11-106A | Input: R • T • J • K • W (±100mV ~ ±50V) |
2CH AC Strain Amp | AP11-104A | Response Frequency: 2KHz |
2CH DC Strain Amp | AP11-110 | Response Frequency: 50KHz |
2CH Vibration/RMS Amp | AP11-109 | ±100mV ~ ±500V |
F/V Converter | AP11-108 | Input: 1KHz ~ 10KHz |
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