The Structural Metal Column: A Chronology

2009 ◽  
pp. 1-1-11
Author(s):  
B. G. Johnston
Keyword(s):  
Structural Metal

Fluorescent zinc(ii)-based metal–organic frameworks for nitroaromatics sensing

2018 ◽  
Vol 42 (7) ◽  
pp. 5162-5167 ◽  
Author(s):  
Yujie Ma ◽  
Guanhong Xu ◽  
Fangdi Wei ◽  
Yao Cen ◽  
Yueyue Song ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Fluorescence Properties ◽  
Structural Metal ◽  
Metal Organic ◽  
Organic Framework

A new structural metal–organic framework with fluorescence properties was synthesized and applied for sensitive and selective sensing of nitroaromatics.

Study of the dynamic hardness of structural metal materials

2020 ◽  
Vol 86 (1) ◽  
pp. 57-61
Author(s):  
Aleksandr V. Ilinskiy ◽  
Alexey V. Fedorov ◽  
Ksenia A. Stepanova ◽  
Igor U. Kinzhagulov ◽  
Igor O. Krasnov
Keyword(s):  
Comparative Analysis ◽  
Standard Deviation ◽  
Energy Approach ◽  
Metallic Materials ◽  
Sample Standard Deviation ◽  
Dynamic Indentation ◽  
Dynamic Hardness ◽  
Structural Metal ◽  
Metal Materials ◽  
Hardness Values

The mechanical properties of structural metallic materials are the most important indicators of their quality. Different methods (i.e., the methods of Shore, Brinell, Rockwell, Leeb, Vickers, method of instrumental indentation, and others) are currently used for determination of the hardness — one of the most important mechanical characteristics of structural metal materials. Among them is the method of dynamic indentation first developed at the Institute of Applied Physics of the National Academy of Sciences of Belarus. With the goal of further developing of the method of dynamic indentation, we propose the procedures aimed at increasing the accuracy of assessing the hardness of structural metallic materials: parameters of the contact interaction of the indenter with the sample material (Brinell hardness values) were measured using a dynamic indentation (DI) device; the values of surface and volumetric dynamic hardness were calculated taking into account the characteristics obtained using a DI device; a comparative analysis of hardness estimates obtained by different approaches was carried out. As a result of the comparative analysis of the methods, as well as their experimental testing, it was shown that an increase in the accuracy of hardness assessment can be achieved by using the «energy» approach based on assessing the ratio of the total work to the volume of the recovered indentation upon dynamic indentation of structural metal materials. The use of the «energy» approach provided obtaining the sample standard deviation of the volumetric dynamic hardness values, which, in turn, was significantly lower than the sample standard deviation of the surface dynamic hardness values and data of the dynamic indentation device, which directly affects an increase in the accuracy of hardness estimation during dynamic indentation of structural metal materials. Proceeding from the «energy» approach, a new algorithm for processing the initial signal is proposed when the dynamic hardness is determined using a dynamic indentation device.

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