ASTM D5023-15
Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Three-Point Bending)

Standard No.

ASTM D5023-15

Release Date

2015

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D5023-23

Latest

ASTM D5023-23

Scope

5.1 This test method provides a simple means of characterizing the thermomechanical behavior of plastic compositions using very small amounts of material. The data obtained may be used for quality control, research and development as well as the establishment of optimum processing conditions.

5.2 Dynamic mechanical testing provides a sensitive means for determining thermomechanical characteristics by measuring the elastic and loss moduli as a function of frequency, temperature, or time. Plots of moduli and tan delta of a material versus these variables can be used to provide a graphical representation indicative of functional properties, effectiveness of cure (thermosetting resin system), and damping behavior under specified conditions.

5.3 This test method can be used to assess:

5.3.1 Modulus as a function of temperature,

5.3.2 Modulus as a function of frequency,

5.3.3 The effects of processing treatment,

5.3.4 Relative resin behavioral properties, including cure and damping.

5.3.5 The effects of substrate types and orientation (fabrication) on modulus,

5.3.6 The effects of formulation additives which might affect processability or performance,

5.3.7 The effects of annealing on modulus and glass transition temperature,

5.3.8 The effect of aspect ratio on the modulus of fiber reinforcements, and

5.3.9 The effect of fillers, additives on modulus and glass transition temperature.

5.4 Before proceeding with this test method, refer to the specification of the material being tested. Any test specimen preparation, conditioning, dimensions, or testing parameters, or combination thereof, covered in the relevant ASTM materials specification shall take precedence over those mentioned in this test method. If there are no relevant ASTM material specifications, then the default conditions apply.

1.1 This test method outlines the use of dynamic mechanical instrumentation for determining and reporting the visco-elastic properties of thermoplastic and thermosetting resins and composite systems in the form of rectangular bars molded directly or cut from sheets, plates, or molded shapes. The data generated, using three-point bending techniques, may be used to identify the thermomechanical properties of a plastic material or compositions using a variety of dynamic mechanical instruments.

1.2 This test method is intended to provide means for determining the viscoelastic properties of a wide variety of plastics materials using nonresonant, forced-v......

ASTM D5023-15 Referenced Document

• ASTM D4000 Standard Classification System for Specifying Plastic Materials
• ASTM D4065 Standard Practice for Plastics: Dynamic Mechanical Properties: Determination and Report of Procedures
• ASTM D4092 Standard Terminology: Plastics: Dynamic Mechanical Properties
• ASTM D618 Standard Practice for Conditioning Plastics for Testing

ASTM D5023-15 history

• 2023 ASTM D5023-23 Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Three-Point Bending)
• 2015 ASTM D5023-15 Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Three-Point Bending)
• 2007 ASTM D5023-07 Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Three-Point Bending)
• 2001 ASTM D5023-01 Standard Test Method for Measuring the Dynamic Mechanical Properties: In Flexure (Three-Point Bending)
• 1999 ASTM D5023-99 Standard Test Method for Measuring the Dynamic Mechanical Properties: In Flexure (Three-Point Bending)