Date post: | 16-Jul-2015 |
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Olympus NDT PV200 Series
Nicholas BublitzGlobal Products Support Specialist
PV Series Description
� The PV Series is a “Solution” package. Different configurations can be configured to meet customer’s applications
PV (Pressure Vessel) Series Description
� The “PV” Series solutions
include:
– Acquisition unit
– Scanner
– Applicable Accessories
– Setup and Analysis Tools
Typical AUT Techniques
PV200 Technique
Phased
TOFD
Array
PV200 Description
♦ PV200 is a generic description for a weld inspection package utilizing Phased Array and Tofd techniques.
♦ Package tools are determined predominately by wall thickness and code compliance
PV200 Technique
♦ PV200 incorporates Phased Array ultrasonics
♦ PV200 usually also incorporates Tofd
♦ In some case other techniques like Creeping waves may be required but it is less common
Technique Overview: Brief Phased Array and Tofd Theory
What is Phased Array?♦ Advanced Ultrasonic technique
used for flaw detection, sizing, and imaging.
♦ Allows for electrical manipulation of probe characteristics by introducing time shifts to sent and received signals
♦ Utilizes multi-element (array) probes for increased capabilities over conventional ultrasonics.
Advantages of Phased Array♦ Electronic scanning (raster) possible
without moving probe. (linear or E-scans scans)
♦ Increased control of beam characteristics.
♦ Simultaneous inspection with multitude of angles using one probe (sector scanning)
♦ Can better inspect complex geometries or limited access areas.
♦ Can replace costly and hazardous radiography applications.
Sector Scans Phased Array Sector Scan Channel - Defined as different focal laws
(A-scans) at different angles being generated by the same group of elements on the same channel.
Sector Scan Advantages� Allows use of small probes and
provides large coverage area from small footprint
� Provides higher level of detection, flaw sizing and flaw characterization
� Can provide full volumetric inspection in one channel\one acquisition on most welds thinner than 25mm
� Flaw detection and sizing less dependent on orientation due to multi-angle coverage
Linear or E-scans Scans
Phased Array Linear (E-Scan) Channel - Defined as the same focal law (A-scan) being multiplexed across a series of different elements resulting in the equivalent of a conventional raster scan.
Linear (E-scan) Advantages� 1:1 match for conventional UT raster
scans and procedures. Only different in how the data is acquired. Analysis is exactly the same.
� Provides fast and easy set up and calibration for amplitude based inspection criteria.
� Easy analysis for codes that do not require flaw characterization
Encoded Phased Array
♦ Phased Array can offer a high level of detection and sizing capability and retainable data.
TOFD
� Uses send and receive probes
� The incoming wave vibrates the defect and emits energy in all directions
� The receiver gets one or more signals from the defect
Wave Propagation
FLAW
Diffractedwaves
Diffractedwaves
Incidentwave
Reflectedwave
All directions - Low energy - Independent of incidence angle
TOFD Limitations
� Blind areas :
– Near surface The lateral wave travels below the surface, it is not a surface wave causing a small “dead zone” near the surface
– Back wall Large signal from reflected energy at the back wall creates a dead zone as well
TOFD Data
♦ Side View
♦ Grey scale palette
♦ Sized with cursors
TopVolume
Back Wall
Radiography Replacement
♦ The PV series is suitable for codes where radiography replacement by ultrasonics is allowed
♦ Some of the benefits include no radiation hazards to contend with, no need to stop other productions, and height sizing
PV200 Main Components
PV200 Main Solution Components
♦ NDT Setup Builder
♦ Scan plan Design Software
♦ Setup imported directly into OmniScan
PV200 Main Solution Components
♦ OmniScan MX2– Portable and modular– Easy to use interface
– Setup Wizards
– Ray tracing and weld overlays
– MultiGroup capability (up to 8 Groups)
PV200 Main Solution Components
♦ Mechanical Scanner‒ Magnetic wheel based‒ Chain link based‒ Semi-Automatic
‒ Fully Automatic
PV200 Main Solution Components
♦ Couplant Delivery
– Water Sprayer – manually operated
– CFU – automatic water flow system
Probes and Wedges
♦ Vary by customer need, thickness, material etc.
♦ Typically use IHC (irrigation ports, holes for scanner arms, carbide feet)
♦ Curved wedges required on pipes etc.
PV200 Main Solution Components
♦ Accessories (variable)
– Spare parts– Umbilical/cabling– Preamplifiers– Adapters and extensions
Analysis Software
� Analysis can be done‒ On board the OmniScan‒ In OmniPC on a PC‒ In TV Software on a PC
Reporting� Reporting is usually done in a “table of indications”
manner with images of indications and associated readings
� Similar HTML report from all analysis options� Easy email able and Windows friendly� Ray-Tracing, weld overlays etc. help comprehension
and characterization.
Performance/Calibration Blocks♦ Used to calibrate system and define performance
♦ Used to validate technique over required range
♦ Used to test and validate operators
♦ Typically contains notches and SDH in pattern displaying coverage and effective detection and sizing capabilities
Applicable Customers and Codes♦ PV200 is predominately geared towards
the following two customers
– Manufacturing companies utilizing AWS and ASME and API codes for weld inspection*
– Service companies performing weld inspection to AWS and ASME and API requirements*
*and other codes outside North America
For additional information or to download a product brochure please visit our website:
http://www.olympus-ims.com/en/pv-100/
Thank you!