ASTM D7250/D7250M Standard Practice for Determining Sandwich Beam Flexural and Shear Stiffness
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- Техэксперт: Машиностроительный комплекс
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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
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- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
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- ASTM E855 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
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- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
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- Картотека зарубежных и международных стандартов
ASTM International
Standard Practice for Determining Sandwich Beam Flexural and Shear Stiffness
N D7250/D7250M
Annotation
This practice covers determination of the flexural and transverse shear stiffness properties of flat sandwich constructions subjected to flexure in such a manner that the applied moments produce curvature of the sandwich facing planes. Permissible core material forms include those with continuous bonding surfaces (such as balsa wood and foams) as well as those with discontinuous bonding surfaces (such as honeycomb). The calculation methods in this practice are limited to sandwich beams exhibiting linear force-deflection response. This practice uses test results obtained from Test Methods C393/C393M and/or D7249/D7249M.
The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
Within the text the inch-pound units are shown in brackets.
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.
Автоматический перевод:
Утвержденный технологический процесс для определения изгибного луча сэндвича и стрижет жесткость
Эта практика покрывает определение изгибных и поперечных свойств жесткости сдвига плоских слоистых конструкций, подвергнутых сгибанию таким способом, что прикладные моменты производят искривление тестовых плоскостей направления. Допустимые базовые материальные формы включают тех с непрерывными поверхностями связывания (такими как пробковое дерево и пена), а также тех с прерывистыми поверхностями связывания (такими как соты). Методы расчета в этой практике ограничиваются тестовыми лучами, показывающими линейный ответ отклонения силы. Эта практика использует результаты испытаний, полученные из Методов тестирования C393/C393M и/или D7249/D7249M.
