ASTM D3544-76(1996)

Designation: D 3544 – 76 (Reapproved 1996)
Standard Guide for
Reporting Test Methods and Results on High Modulus
Fibers
This standard is issued under the fixed designation D 3544; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope fies the reporting of essential data. Additional information may
be required to report the results of tests on specific fiber types.
1.1 Committee D-30, having conducted several interlabora-
1.3 This standard may involve hazardous materials, opera-
tory tests of high modulus fibers, believes that many types of
tions, and equipment. This standard does not purport to
equipment and techniques will yield consistent data character-
address all of the safety problems associated with its use. It is
izing the tensile strength and modulus of high modulus fibers.
the responsibility of the user of this standard to establish
The most important consideration is the complete description
appropriate safety and health practices and determine the
of the test methods.
applicability of regulatory limitations prior to use.
1.2 This guide consists of the following three parts:
1.2.1 Part A—Description of Equipment and Techniques—
2. Significance and Use
This section describes the equipment and the techniques used
2.1 The purpose of this guide is to be a research tool (1)to
for each series of tests. The section is complete and universal,
aid in the analysis and correlation of test results obtained from
and should be reviewed by the engineer or scientist responsible
the use of various types of tension testing equipment by
for the overall test program.
different investigators and (2) to identify the important details
1.2.2 Part B—Description of Test Specimens—This section
that must be made in testing to make the results easily
describes each type of fiber tested in a particular series, and can
understood and comparable with the results of other investiga-
be prepared by the test technician.
tors.
1.2.3 Part C—Report of Tension Test Results—This section
summarizes the results of each test series. The format simpli-
NOTE 1—The ASTM practice of providing units of measure in the
International System of Units (SI) has been used. The SI unit for pressure
2 2
or stress is pascal (Pa 5 N/m ) or megapascal (MPa 5 MN/m ). The
following equivalents may be helpful:
This guide is under the jurisdiction of ASTM Committee D-30 on High
1 lbf 5 4.448 N
Modulus Fibers and Their Compositesand is the direct responsibility of Subcom-
1 psi 5 6895 Pa 5 6.895 kPa
mittee D30.03 on Constituent/Precursor Properties.
1000 psi 5 6.895 MPa
Current edition approved Oct. 29, 1976. Published January 1977.
PART A—DESCRIPTION OF EQUIPMENT AND TECHNIQUES
DESCRIPTION OF TENSION TEST MACHINE
Date__________
Manufacturer, Model, and Modifications
Orientation of Test Specimen:
Horizontal h
Vertical h
Other—Describe
Method and Rate of Strain or Load Application:
Discontinuous h
Continuous h
Constant Rate of Traverse h
Constant Rate of Elongation h
Constant Rate of Load h
Other—Describe
Time to Failure _________ s
Description of Load-Measuring System:
Capacity _______ N (_______ lbf), max
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
D 3544
Deflection of Sensing Element at Load _______ mm (_______ in.), max
Load Range _______ N (_______lbf)
Type of Measuring Element
Resolution and Estimate of Error
Description of Elongation Measuring System:
Jaw Separation h
Extensometer on Sample h
Optical h
Continuous Tracking h
Discontinuous or Manual Tracking h
Other—Describe
Resolution and Estimate of Error
Method Used to Determine System Compliance
Compliance Correction Value _____________ mm/N (_____________ in./lbf)
Load Calibration Procedure:
Estimate of Error
Elongation Calibration Procedure:
Estimate of Error
Linearity of Recording Unit(indicate maximum departure from linear response):
Load Indication __________ %
Elongation Indication ______________ %
Response Time of Recording Unit _____________ s full scale
MEASUREMENT OF CROSS-SECTIONAL AREA
Method of Measurement:
Micrometer h
Microscopical—Longitudinal View h
Microscopical—Transverse View h
Calculated from Linear Density h
Other—Describe
Time When Measurement Was Made:
Before Test on Each Specimen h
After Test on Each Specimen h
On Group of Specimens—Average h
Location of Measurements Along Length—at fracture h in gage length h other ________________:
Number of Measurements Made on Each Fiber or Strand _________
Estimate of Error in Cross-Sectional Area _____________ %
MEASUREMENT OF SPECIMEN GAGE LENGTH
Distance Between Fiber or Strand Mounts:
Method of Measurement
Resolution and Estimate of Error
Length of Fiber or Strand over Which Elongation Was Measured:
General Description
Resolution and Estimate of Error
Location and Type of Gage Marks
METHOD OF GRIPPING AND ALIGNING FIBER OR STRAND
Fiber or Strand Mounting Technique:
Clamped Directly in Jawh
Bonded to a Tab h Bonded Between Tabs h
Tab Geometry length____mm (____in.) width____mm (____in.) thickness____mm (____in.)
Type of Adhesive
Other—Describe
Jaw Type:
Flat Faces—Exerting Transverse Pressure h
D 3544
Wedge Type h
Pin-Vise Type h
Other—Describe
Jaw Face Lining:
Face Material ___________ Frequency of Replacement ___________
Surface Geometry flat h _________ serrated h ___________ other h _______
Thickness _______ mm (_______ in.)
Hardness, Durometer, etc. _______
Clamping Pressure: Manual h, Hydraulic h, Pneumatic h
Magnitude _______ MPa (_______ psi)
Method of Measurement
Sample Pre-Tension—During Mountingh , During Strand Cure h Preload in Machineh
Magnitude _______ MPa (_______ psi)
Method of Measurement
Rotational Freedom of Jaws: Top h Bottom h Both h
Rigid h
Pivot h
Swivel, Universal h
Other—Describe
A
Describe Method of Fiber Alignment *
Estimate of Fiber Misalignment with Machine Axis and Method of Measurement________________________________________________________
_________________
A
* Detail if special considerations or techniques are necessary.
ENVIRONMENTAL CONDITIONS—METHOD OF CONTROL AND NOMINAL VALUES
Specimen Conditioning Environment:
Temperature____________________________ __________°C (_______°F)
Relative Humidity_______________________ __________%
Atmosphere Composition_________________ air h, other_______
Atmosphere Pressure_____________________ Ambient h, other_______
Duration of Time at These Conditions_______ h
Specimen Test Environment:
Temperature________________________ ___________°C (_______°F)
Relative Humidity___________________ ___________%
Atmosphere Composition_____________ air, h
other_______
Atmosphere Pressure_________________ Ambient, h
other_______
Duration of Time to Reach Conditions _______ min
Duration of Time at Test Conditions _______ min
Portion of Fiber or Strand Exposed to Test Conditions:
Fiber and Grips h
Short Portion of Fiber h
Exposed Length ___________ mm (___________ in.)
Location of Exposed Length
MEASUREMENT OF MODULUS OF ELASTICITY
Static—Tension Test h
Calculated as Initial Modulus h
Calculated as Secant Modulus h
Calculated as Tangent Modulus h
Other Method—Describe
Dynamic—Sonic Test h
Standing Wave Technique
Manufacturer, Model, and Modifications
Tension on Fiber _______ N (_______ lbf) or Stress _______ MPa (_______ psi)
Method of Tension Measurement
Resolution and Estimate of Error
Sample Length _______ mm (_______ in.)
Method of Length Measurement
Resolution and Estimate of Error
Frequency _______
...