পদ্ধতির তুলনা করুন

	নমনীয়তা ও স্থিতিস্থাপকতার মডুলাস	Janka Hardness
ক্ষেত্র	বনবিদ্যা	বনবিদ্যা
পরিবার	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1950	1934
প্রবর্তক	ASTM International	Gabriel Janka
ধরন	mechanical test	hardness test
মৌলিক উৎস	ASTM D143-19. (2019). Standard test methods for small clear specimens of timber. ASTM International.	ASTM D1037-21. (2021). Standard test methods for evaluating properties of wood-base fiber and particle panel materials. ASTM International.
অপর নাম	MOR, MOE, bending strength	wood hardness, resistance to indentation
সম্পর্কিত	3	3
সারসংক্ষেপ	The Modulus of Rupture (MOR) and Modulus of Elasticity (MOE) are standardized measures of wood mechanical properties determined through static bending tests. MOR quantifies the maximum bending stress wood can withstand before failure; MOE measures stiffness (resistance to bending). These are fundamental properties used for wood grading, structural design, and assessment of wood quality and species suitability for applications requiring strength or stiffness.	The Janka hardness test measures wood resistance to indentation and denting by forcing a steel ball into the wood surface under standard load. Developed by Gabriel Janka in 1934, the test is a simple, nondestructive indicator of wood durability, wear resistance, and suitability for flooring, furniture, and other wear-prone applications. Janka hardness is one of the most widely used wood property metrics in wood science and commerce.