Small-size eight-channel flaw detector of “Scanner+” series – “Skaruch” model (UMU “Skaruch”) is designed for prompt detection and characterization of defects of weld joints and base metal of pipelines, containers and metal structures. UMU “Skaruch” allows nondestructive inspection of metal, polyethylene, plastic, ceramics quality.
UMU “Skaruch” flaw detector can be sued as:
- manual ultrasonic flaw detector – thickness gauge;
- multichannel portable unit with automatic recording and interpretation of inspection results.
The availability of 8 channels for UMU “Skaruch” and possible choice between 16 different inspection schemes allows application of the unit as part of multichannel sets for semiautomatic and automatic inspection. UMU “Skaruch” passed the state testing and has good feedback from the companies of diff erent branches. UMU “Skaruch” is certified by RF State Committee for Standardization, Metrology and Certifi cation, registered in the state register of measuring equipment (No. 15723-02) and admitted for use in the Russian Federation. The certificates of CIS countries are available.
The application method of UMU “Skaruch” is approved by Russian Federal Service for Ecological, Technical and Atomic Supervision and permitted for use in inspected sites.
UMU “Skaruch” peculiar features:
- flaw detector and thickness gauge features;
- easy adjustment and inspection, small size and weight;
- time measurement and “X”, “Y” coordinates values;
- storage of settings for certain piezoelectric transducers and inspected products;
- storage of impulses image and accompanying information;
- sensitivity time adjustment (DAC);
- automatic gain adjustment (AGC) mode;
- “two pulse gates” mode;
- sound and light alarm;
- battery charge control and discharge alarm;
- integrated clock and temperature sensor;
- detector available memory displaying;
- printing of reports on connected printer;
- copying of inspection results to connected computer;
- interface language selection feature (Russian, English, Turkish);
- input of associated comments.
Main technical parameters
| Number of channels | 8 |
| Number of scanning schemes | 16 |
| Gain adjustment |
|
| Maximum scanning depth (longitudinal waves) | 10000 mm |
| Display | color, liquid-crystal |
| Number of stored settings | 256 |
| Number of stored display images | 1000 |
| Number of DAC adjustment points | 8 |
| AGC adjustment range | -6 … +18 dB |
| Operating temperature range | -20 … +45⁰C |
| Battery or mains supply | 220 V |
| Dimensions | 200x225x90 mm |
| Weight (with batteries) | 3.5 kg |
Operating parameters
- 16 different schemes of scanning on each millimeter of inspected product;
- detection of internal defects (pores, slag inclusions, poor penetration, cracks etc.);
- characterization of defects (volumetric, planar-volumetric, planar);
- evaluation of parameters of defects (length and depth);
- thickness gauging of the scanned surface base metal with the area width of up to 200 mm;
- automatic control of acoustic contact with the product;
- automatic setting and adjustment of ultrasonic inspection parameters with allowance for roughness;
- self-monitoring of electronics and acoustic system operability;
- automatic recording, storing and interpretation of nondestructive inspection results;
- transfer of inspection results into the memory of connected computer;
- printing out of inspection results by means of connected computer;
- independent power supply.
Presentation of weld joint inspection results
Checking of automatic inspection results on detector display. One can review the inspection results by activating the corresponding option in detector menu. In this case the overall pattern of the joint defectiveness or inspected area of the wed joint (type D display) is displayed. Cursor is controlled by parameters adjustment handle which is located on detector panel or by means of keys. The detector insures review of results in form of digital line-by-line table (see printouts of weld joint inspection results).
Printout of inspection results
The results of ultrasonic inspection can be printed out in form of line-by-line table on a standard piece of paper (A4 format). The printer is connected to connecter on the rear panel of UMU “Skaruch” by means of cable.
Sample printout of ultrasonic inspection results by inspection of butt joint with 20 mm thickness
Notes to interpretation of results
A part of weld joint 140 mm long was inspected. Five defected areas are detected:
1. In the middle layer of the joint cross-section there is a volumetric defect 10 mm long (beginning – 1st mm, end – 10th mm), diameter 2 mm.
2. In the top layer of the joint cross-section there is a planar-volumetric defect 23 mm long (beginning – 15th mm, end – 37th mm), maximum size 3 mm.
3. In the bottom layer of the joint cross-section there is a planar defect 22 mm long (beginning – 49th mm, end – 70rd mm).
4. From 94rd mm to 100th mm there are point defects (1 mm in size) in the bottom, middle and top layers.
5. In the top layer of the joint cross-section there is a mainly planar-volumetric defect 14 mm long (beginning – 111th mm, end – 124th mm), 2 mm in size.
Presentation of inspection results by scanning thickness gauging and detection of exfoliations
One can review the results of automatic thickness gauging by activating the corresponding option in detector menu. In this case the overall pattern (type D display) of the whole inspected area with back surface relief is displayed.
Review of results of automatic thickness gauging on detector display
One can review the results of automatic thickness gauging by activating the corresponding option in detector menu. In this case the overall pattern (type D display) of the whole inspected area with back surface relief is displayed.
Sample printout of ultrasonic inspection results
Cursor is controlled by parameters adjustment handle or by means of keys. The detector insures review of results in form of digital line-by-line table of thicknesses of inspected area
including under each transducers of acoustic unit (see sample printouts of thickness gauging results).
The results of performed ultrasonic inspection can be printed out in form of line-by-line table on a standard piece of paper of A4 format. The printer is connected to connecter on the rear panel of UMU
“Skaruch” by means of cable. All reports have uniform heading containing the following information:
- date, inspection start and end time – automatic determination;
- the fi eld for inspected object name is fi lled in by the operator;
- the number of scanned area is inputted by the operator before inspection;
- diameter of the inspected product is inputted by the operator;
- thickness threshold value is inputted by the operator before inspection;
- number of the used unit is inputted by the operator after unit switching on;
- temperature inside the detector is determined by the temperature sensor.
In the fi rst column of the report table there is a coordinate of the inspected area with 2mm discreteness, in the next 4 columns there are thicknesses registered by transducers No.1, 2, 3, 4.
Application of UMU “Skaruch” in the manual ultrasonic fl aw detector-thickness gauge mode
Operation in the manual fl aw detector-thickness gauge mode is peculiar for simple control and various functions. The detector can be used with any piezoelectric transducer in operating frequency range.
Operating parameters
Main menu
0 – Automatic 8-channel fl aw detector (see “Skaruch”)
1 – General purpose fl aw detector
2 – Manual thickness gauge
3 – Automatic scanning thickness gauge (see “Skaruch”)
4 – Settings
5 – Inspection results review
6 – Memory cleaning
7 – Service life (see below)
8 – Electroacoustical channel test (see “Skaruch”)
Service life
Temperature inside the detector
Battery charge
Free memory capacity
Current date and time
Settings
Selection of model and printer encoding pages
Selection of interface language (Russian, English, Turkish)
Power saving and autosave function on/off
Selection of measurement units (mm/mcs)
Thickness gauge
Ultrasonic scan display
Digital display of product thickness
Display of echo pulse arrival time
Availability of AGC mode and second pulse gate
DAC and AGC modes
Number of DAC adjustment points – up to 8
AGC adjustment range: -6 … +18 dB
“Two pulse gates” (TG) mode
Measuring of echo pulse arrival time in each pulse gate.
Indication of product thickness if coating is available.
Storing and printing out of fl aw detector display image
Flaw detector memory allows storing of up to 1000 display images with accompanying information. Ultrasonic images stored in fl aw detector can be copied into the memory of connected computer and printed out by means of program for visualization of inspection results.
Inspection results stored in the flaw detector memory can be printed out on printer connected to detector.
Sample report with results of manual inspection
Sample Protocol with the results of mechanized testing
