ASTM F1035-91(1997)e1

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
e1
Designation: F 1035 – 91 (Reapproved 1997)
Standard Practice for
Use of Rubber-Cord Pie Disk to Demonstrate the
Discernment Capability of a Tire X-ray Imaging System
This standard is issued under the fixed designation F 1035; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Section 3 and footnote 4 were modified editorially in March 1998.
1. Scope imaging system. (F 538)
3.1.2 X-ray image plane, n— in tire testing, a surface
1.1 This practice describes the construction and use of a
located at a specified distance from the X-ray tube “focal spot.”
rubber-cord pie-shaped standard disk for demonstrating the
3.1.2.1 Discussion—The centerline of the cone of radiation
discernment capability of an X-ray imaging system.
from the X-ray tube is normal to the image plane. F 538
1.2 This practice is applicable to direct viewing (fluoro-
3.1.3 X-ray imaging system, n— in tire testing, a collection
scopic) X-ray imaging systems and film, plate or paper
of the components and subsystems needed to produce a
(radiographic) X-ray imaging systems that are used for check-
fluoroscopic or radiographic image of the tire.
ing the construction consistency of pneumatic tires.
3.1.3.1 Discussion—The collection includes the X-ray high
1.3 The values stated in SI units are to be regarded as the
voltage generator, X-ray tube, and X-ray screen or radiograph.
standard.
F 538
1.4 This standard does not purport to address the safety
3.1.4 X-ray radiograph, n—an X-ray film, plate, or paper
concernss associated with its use. It is the responsibility of the
that is placed at the image plane and is used for recording an
user of this standard to establish appropriate safety and health
X-ray image of the object being examined. F 538
practices and determine the applicability of regulatory limita-
3.1.5 X-ray screen, n—a fluorescent screen, placed at the
tions prior to use.
image plane, that produces an X-ray image of the object being
2. Referenced Documents
examined.
3.1.5.1 Discussion—This visible light may be photographed
2.1 ASTM Standards:
or input to a television system. F 538
D 1349 Practice for Rubber—Standard Temperatures for
Testing
4. Summary of Practice
D 3186 Test Methods for Rubber—Evaluation of SBR
4.1 The pie disk is a rubber-cord composite that is used as
(Styrene-Butadiene Rubber) Mixed With Carbon Black or
the subject in an X-ray imaging system. Each of the six
Carbon Black and Oil
sections of the disk has a different cord material which,
F 538 Terminology Relating to the Characteristics and Per-
together, represent the cords commonly used in vehicle tires.
formance of Tires
The X-ray absorption of these cords range from very nearly the
3. Terminology
same as that of the rubber matrix to quite different from it.
4.2 The rubber-cord pie disk shall be placed between the
3.1 Definitions:
X-ray tube and the X-ray image plane at a specified distance
3.1.1 pie disk, rubber-cord, n— in tire X-ray testing,a
from the image plane (see Fig. 1). The ambient conditions are
circular disk of a specified diameter having six pie-shaped
controlled or monitored, and recorded.
sections, each containing cord of different materials; it is used
4.3 The image of the disk on a fluorescent screen or
for demonstrating the discernment capability of an X-ray
photograph can be studied for clarity of detail for each cord
material. The voltage and current of the X-ray high voltage
This practice is under the jurisdiction of ASTM Committee F-9 on Tires and is
generator shall be adjusted for optimum detail and contrast
the direct responsibility of Subcommittee F09.10 on Equipment, Facilities, and
sensitivity to view all cord materials simultaneously.
Calibration.
Current edition approved Feb. 22, 1991. Published April 1991. Originally
published as F 1035 – 86. Last previous edition F 1035 – 86.
Annual Book of ASTM Standards, Vol 09.01.
Annual Book of ASTM Standards, Vol 09.02.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
e1
F 1035 – 91 (1997)
FIG. 1 Pie-Cord Disk Test Fixture Positioning for Tire X-Ray System
5. Significance and Use for a particular sector or cord-type, as may be required for
examining a specific tire.
5.1 All
...