ASTM D7857 Standard Test Method for Evaluating the Flexural Properties and Internal Bond Strength of Fire-Retarded Mat-Formed Wood Structural Composite Panels Exposed to Elevated Temperatures
Данный раздел/документ содержится в продуктах:
- Техэксперт: Машиностроительный комплекс
- Картотека зарубежных и международных стандартов
- ASTM D7202 Standard Test Method for Determination of Beryllium in the Workplace by Extraction and Optical Fluorescence Detection
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ASTM E855 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
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- ASTM D7202 Standard Test Method for Determination of Beryllium in the Workplace by Extraction and Optical Fluorescence Detection
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ASTM E855 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- 13.040
- ASTM D7202 Standard Test Method for Determination of Beryllium in the Workplace by Extraction and Optical Fluorescence Detection
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ASTM E855 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- 13.040.30
- ASTM D7202 Standard Test Method for Determination of Beryllium in the Workplace by Extraction and Optical Fluorescence Detection
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ASTM E855 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- ASTM D7202 Standard Test Method for Determination of Beryllium in the Workplace by Extraction and Optical Fluorescence Detection
- ASTM D7202 Standard Test Method for Determination of Beryllium in the Workplace by Extraction and Optical Fluorescence Detection
- ASTM D7202 Standard Test Method for Determination of Beryllium in the Workplace by Extraction and Optical Fluorescence Detection
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ASTM E855 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
- ASTM E855 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
- ASTM E4 Standard Practices for Force Verification of Testing Machines
- ASTM D6874 Standard Test Methods for Nondestructive Evaluation of Wood-Based Flexural Members Using Transverse Vibration
- ASTM D4442 Standard Test Methods for Direct Moisture Content Measurement of Wood and Wood- Based Materials
- ASTM D6643 Standard Test Method for Testing Wood-Base Panel Corner Impact Resistance
- ASTM D2395 Standard Test Methods for Density and Specific Gravity (Relative Density) of Wood and Wood-Based Materials
- ASTM D7202 Standard Test Method for Determination of Beryllium in the Workplace by Extraction and Optical Fluorescence Detection
- Картотека зарубежных и международных стандартов
ASTM International
Standard Test Method for Evaluating the Flexural Properties and Internal Bond Strength of Fire-Retarded Mat-Formed Wood Structural Composite Panels Exposed to Elevated Temperatures
N D7857
Annotation
This test method is designed as a laboratory screening test. It is intended to establish an understanding of the respective contributions of the many wood material, fireretardant, resin and processing variables, and their interactions, upon the mechanical properties of fire-retarded mat-formed wood structural composite (FRSC) panels as they affect flexural and internal bond (IB) performance and as they are often affected later during exposure to high temperature and humidity. Once the critical material and processing variables have been identified through these small-specimen laboratory screening tests, additional testing and evaluation shall be required to determine the effect of the treatment on the panel structural properties and the effect of exposure to high temperature on the properties of commercially produced FRSC panels. In this test method, treated structural composite panels are exposed to a temperature of 77°C (170°F) and at least 50% relative humidity.
The purpose of the preliminary laboratory-based test method is to compare the flexural properties and IB strength of FRSC panels relative to untreated structural composite panels with otherwise identical manufacturing parameters. The results of tests conducted in accordance with this test method provide a reference point for estimating strength temperature relationships for preliminary purposes. They establish a starting point for subsequent full-scale testing of commercially produced FRSC panels.
This test method does not cover testing and evaluation requirements necessary for product certification and qualification or the establishment of design value adjustment factors for FRSC panels.
NOTE 1—One potentially confounding limitation of this preliminary screening test method is that it may be conducted with laboratory panels that may not necessarily represent commercial quality panels. A final qualification program should likely be conducted using commercial quality panels and the scope of the review should include evaluation of the effects of the treatment and elevated temperature exposure on all relevant mechanical properties of the commercially produced panel.
