【国外标准】 Standard Guide for Data Fields for Computerized Transfer of Digital Ultrasonic Testing Data (Withdrawn 2013)

The primary use of this guide is to provide a standardized approach for the data file to be used for the transfer of digital ultrasonic data from one user to another where the two users are working with dissimilar ultrasonic systems. This guide describes the contents, both required and optional, for an intermediate data file that can be created from the native format of the ultrasonic system on which the data was collected and that can be converted into the native format of the receiving ultrasonic or data analysis system. The development of translator software to accomplish these data format conversions is being addressed under a separate effort; this will include specific items needed for the data transfer, for example, language used, memory requirements and intermediate specification, including detailed data formats and structures. Ths guide will also be useful in the archival storage and retrieval of ultrasonic data as either a data format specifier or as a guide to the data elements that should be included in the archival file.Although the recommended field listing includes more than 120 items, only about one third of those are regarded as essential and marked with Footnote C in Table 1. Fields so marked must be addressed in the data base. The other recommended fields provide additional information that a user will find helpful in understanding the ultrasonic examination result. These header field items will, in most cases, make up only a very small part of an ultrasonic examination file. The actual stream of ultrasonic data that make up the image will take up the largest part of the data base. Since an ultrasonic image file will normally be large, the concept of data compression will be considered in many cases. Compressed data should be noted, along with a description of the compression method, as indicated in Field No. 122.This guide describes the structure of a data file for all of the ultrasonic information collected in a single scan. Some systems record multiple inspection results during a single scan. For example, through transmission attenuation data as well as pulse echo thickness data may be recorded at the same time. These data may be stored in separate image planes; see Field No. 102. In other systems, complete digitized waveforms may be recorded at each inspection point. It is recognized that the complete examination record may contain several files, for example, for the same examination method in different object areas, with or without image processing, for different examination methods (through-transmission, pulse-echo, radiologic, infrared, etc.) collected during the same or during different scan sessions, and for variations within a single method (frequency change, etc.). Information about the existence of other images/examination records for the examined object should be noted in the appropriate fields. A single image plane may be one created by overlaying or processing results for multiple examination approaches, for example data fusion. For such images, the notes sections must clearly state how the image for this file was created.TABLE 1 Field ListingField NumberA Field Name and Description Data Type/UnitsBHeader Information: 1C Intermediate file name Alphanumeric stringD 2C Format revision code Alphanumeric string 3C Format revision date yyyy/mm/ddD 4C Source file name Alphanumeric string 5 Examination file description notes Alphanumeric string 6C Examining company and location Alphanumeric stringD 7C Examination date yyyy/mm/dd 8C Examination time hh:mm:ss 9C Type of examination Alphanumeric stringD 10C Other examinations performed Alphanumeric stringD 11 Operator Name Alphanumeric string 12C Operator identification code Alphanumeric string 13C ASTM, ISO, or other applicable standard inspection specification Alphanumeric string 14 Date of applicable standard yyyy/mm/dd 15C Acceptance criteria Alphanumeric string 16C System of units Alphanumeric stringD 17 Notes Alphanumeric stringExamination System Description: 18 Examination system manufacturer(s) Alphanumeric stringD 19C Examination system model Alphanumeric string 20 Examination system serial number Alphanumeric stringPulser Description: 21 Pulser electronics manufacturer Alphanumeric string 22 Pulser electronics model number Alphanumeric string 23 Pulser type Alphanumeric stringD 24 Pulse repetition frequency Real number, kiloHertz 25 Pulse height Alphanumeric stringD 26 Pulse width Real number, nsec 27 Last calibration date yyyy/mm/dd 28 Notes on pulser section Alphanumeric stringReceiver Description: 29 Receiver electronics manufacturer Alphanumeric string 30 Receiver electronics model Alphanumeric string 31 Receiver electronics response center frequency Real number, MHzD 32 Receiver bandwidth Real number, MHzD 33 Fixed receiver gain Real number, dB 34 User selected receiver gain Real number, dB 35 Last calibration date yyyy/mm/dd Notes on receiver section Alphanumeric stringGate Description: 37 Number of gates Integer 38 Gate type Alphanumeric stringD 39 Gate synchronization Alphanumeric string 40 Gate start delay Alphanumeric string 41 Gate width Alphanumeric string 42 Gate threshold level Alphanumeric string 43 Notes on gate section Alphanumeric stringSearch Unit Description: 44 Transmit search unit manufacturer Alphanumeric string 45 Transmit search unit model Alphanumeric string 46 Transmit search unit serial number Alphanumeric string 47 Transmit search unit element diameter Real number 48 Measured beam diameter of the Transmit search unit at the examination surface Real number 49 Location of measurement of beam diameter of the transmit search unit Alphanumeric stringD 50 Transmit search unit focal length Real numberD 51 Transmit search unit nominal frequency Real number, MHz 52 Transmit search unit response center frequency Real number, MHz 53 Transmit search unit response bandwidth Real number, MHz 54 Transmit search unit cable type Alphanumeric string 55 Transmit search unit cable length Real number 56 Number of values for Transmit search unit digitized waveform IntegerD 57 Transmit search unit waveform values Real number 58 Notes on Transmit search unit waveform Alphanumeric string 59 Transmit search unit coupling technique and medium Alphanumeric string 60 Receive search unit manufacturer Alphanumeric string 61 Receive search unit model number Alphanumeric string 62 Receive search unit serial number Alphanumeric string 63 Receive search unit element diameter Real number 64 Measured beam diameter of the “receive” search unit at the examination surface Real number 65 Location of measurement of beam diameter of the receive search unit Alphanumeric stringD 66 Receive search unit focal length Real numberD 67 Receive search unit nominal frequency Real number, MHz 68 Receive search unit response center frequency Real number, MHz 69 Receive search unit response bandwidth Real number, MHz 70 Receive search unit cable type Alphanumeric string 71 Receive search unit cable length Real number 72 Number of values for “receive” search unit digitized waveform IntegerD 73 Receive search unit waveform values Real number 74 Notes on Receive search unit waveform Alphanumeric string 75 Receive search unit coupling technique and medium Alphanumeric stringExamined Sample Description: 76C Examined sample identification Alphanumeric string 77C Examined sample name Alphanumeric string 78 Examined sample description Alphanumeric string 79C Examined sample material Alphanumeric string 80 Examined sample notes (history, use, etc.) Alphanumeric stringD 81C Number of scan segments for this part Integer 82 Reference sample identification Alphanumeric string 83 Reference sample description Alphanumeric string 84 Reference sample file name/location Alphanumeric string 85 Reference sample notes (use, etc.) Alphanumeric stringDCoordinate System and Scan Description Machine Coordinate System: 86 Machine scan axis Alphanumeric stringD 87 Machine index axis Alphanumeric string 88 Machine third axis Alphanumeric string 89 Reference for machine coordinate system Alphanumeric stringPart Coordinate System: 90 First part axis Alphanumeric stringD 91 Second part axis Alphanumeric string 92 Third part axis Alphanumeric string 93 Reference for part coordinate system Alphanumeric stringObject Target Points: 94C Number of target points Integer 95C Description of target point Alphanumeric string 96C Coordinate of target point in first part axis Real number 97C Coordinate of target point in second part axis Real number 98 Coordinate of target point in third part axis Real numberData Plane: 99 Description of the plane onto which data will be projected Alphanumeric string 100 Coordinate system notes Alphanumeric stringExamination Parameters: 101C Coordinate location number Integer 102C Number of data values per coordinate location IntegerD 103C Minimum value of test data range or resolution IntegerD 104C Maximum value of test data range or resolution IntegerD 105C Engineering units for minimum legal data value Alphanumeric stringD 106C Engineering units for maximum legal data value Alphanumeric stringD 107C Number of bits to which the original data was digitized Integer 108C Type of data scale Alphanumeric stringD 109C Size of data step Real numberD 110C Format of data recording Alphanumeric stringD 111C Number of colors or gray levels used Integer 112C Distribution of colors or gray levels Alphanumeric stringExamination Results: 113C Scan segment number IntegerD 114C Scan segment description Alphanumeric string 115 Scan segment location on part Alphanumeric string 116 Scan segment orientation Alphanumeric string 117C Scan pattern description Alphanumeric string 118 Annotation Alphanumeric stringD 119C Distance between data sample points Real number 120C Interval between data locations in index direction Real number 121 Notes on data intervals Alphanumeric string 122 Notes on data format including notes on any compression techniques used Alphanumeric string 123C Total number of data points IntegerD 124C Actual stream of ultrasonic data Real numbersDA Field numbers are for reference only. They do not imply a necessity to include all those fields in any specific database nor do they imply a requirement that fields be used in this particular order.B Units listed first are SI; secondary units are inch-pound (English); see Field No. 16.C Denotes essential field for computerization of test results.D See Section 5 for further explanation.1.1 This guide provides a listing and description of the fields that are recommended for inclusion in a digital ultrasonic examination data base to facilitate the transfer of such data. This guide is prepared for use particularly with digital image data obtained from ultrasonic scanning systems. The field listing includes those fields regarded as necessary for inclusion in the data base (as indicated by Footnote C in Table 1); these fields, so marked, are regarded as the minimum information necessary for a transfer recipient to understand the data. In addition, other optional fields are listed as a remainder of the types of information that may be useful for additional understanding of the data, or applicable to a limited number of applications.1.2 It is recognized that organizations may have in place an internal format for the storage and retrieval of ultrasonic examination data. This guide should not impede the use of such formats since it is probable that the necessary fields are already included in such internal data bases, or that the few additions can be made. The numerical listing indicated in this guide is only for convenience; the specific numbers carry no inherent significance and are not a part of the data file.1.3 The types of ultrasonic examination systems that appear useful in relation to this guide include those described in Practices E 114, E 214 and E 1001. Many of the terms used are defined in Terminology E 1013 and E 1316. The search unit parameters used in this guide follow from those used in Guide E 1065.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.