The Bird Impact Test Methods and Equipment of the Nanchang Aircraft Manufacturing Company

1991 ◽  
Author(s):  
Jialiang Zhou ◽  
Guomin Xu ◽  
Hongguang Tang
Keyword(s):  
Impact Test ◽  
Test Methods ◽  
Aircraft Manufacturing ◽  
Manufacturing Company ◽  
Bird Impact

Fasteners at Low Temperatures: Characterization and Methods for Design

2011 ◽  
Author(s):  
Melanie Stephan ◽  
Jens O. Weber ◽  
Ulrich Wuttke ◽  
Christina Berger
Keyword(s):  
Impact Test ◽  
Freezing Point ◽  
Lattice Structure ◽  
Detailed Examination ◽  
Test Methods ◽  
Climatic Conditions ◽  
Test Method ◽  
Design Concepts ◽  
Ductile Behavior ◽  
Pendulum Impact

Bolted joints are a major part of wind energy plants. Due to climatic conditions, they are often exposed to temperatures far below the freezing point. Together with the multiaxial state of stress, which results from the notch effect of the thread, and possible dynamic overloads during operation, sufficient ductility of the material is needed. The state of the art method to investigate the ductile behavior of fasteners is the Charpy pendulum impact test with a V-notched specimen. According to international standard DIN EN ISO 898-1 [1] respectively ASTM F568M-07 [2], fasteners made of carbon steel and alloy steel with a body centered cubic lattice structure can be used for temperatures down to 223 K (−50°C, −58°F) as long as a minimum impact energy of 27 J at 253 K (−20°C, −4°F) is met. As there are several disadvantages in using this test method for fasteners, a detailed examination of existing test methods and design concepts is necessary to find alternatives to the Charpy pendulum impact test. Extensive quasi-static and dynamic material tests were conducted on fasteners with property classes 5.6, 10.9 and 12.9 in a temperature range between 203 K (−70°C, −94°F) and room temperature 293 K (20°C, 68°F). Both mechanical properties and the influence of different specimen geometries were evaluated. Analytical concepts for the description of the low temperature applicability of different steels were analyzed.

Production Improvement in an Aircraft Manufacturing Company Using Value Stream Mapping Approach

2014 ◽  
Vol 660 ◽  
pp. 1038-1042 ◽  
Author(s):  
Md Saidin Wahab ◽  
Kamsidi Abd Malek Sidek ◽  
Mohd Shahir Yahya ◽  
Muhammad Mustaqim Ahmat
Keyword(s):  
Information Flow ◽  
Simulation Software ◽  
Shop Floor ◽  
Value Stream Mapping ◽  
Production Flow ◽  
Cycle Times ◽  
Value Stream ◽  
Aircraft Manufacturing ◽  
Current State ◽  
Manufacturing Company

The purpose of this study is to develop a value stream mapping for a production in an aircraft manufacturing company. The process begins with creating a current state map and understands the production flow and the current cycle times. This provides the information needed to produce a future state map. The goal is to identify and eliminate the waste, which is any activity that does not add value to the final product, in the production process. In order to collect the information needed, the study was conducted within the production facility to enable the researcher gained knowledge and familiarized with the production flow and the activities being performed at the shop floor. Parameters such as cycle times, down times, work in process (WIP) for inventory and material, and information flow paths were recorded. This information will enable the researcher to visualize the current state of the process activities by mapping the material and information flow and looking for opportunities to eliminate wastes. ARENA simulation software package was used to simulate and analyze the process flow and times. Result from the analysis shows that there are areas where the company can further improve their production system. The results show the improvement of the cycle time up to 22% based on the new proposed arrangement of the layout. Therefore the propose layout will be guided to the company in order to improve their production.

Mechanical impact test methods for hard coatings of cutting tools: a review

2021 ◽  
Author(s):  
Tianxiang Wang ◽  
Xuming Zha ◽  
Fengbiao Chen ◽  
Jue Wang ◽  
Yousheng Li ◽  
...  
Keyword(s):  
Impact Test ◽  
Cutting Tools ◽  
Test Methods ◽  
Hard Coatings ◽  
Mechanical Impact

scholarly journals Overview of dynamic test methods for examining the glass window resistance

2021 ◽  
Vol 352 ◽  
pp. 00004
Author(s):  
Richard Jankura ◽  
Vlastimil Mach
Keyword(s):  
Impact Test ◽  
Dynamic Test ◽  
Wind Load ◽  
Test Methods ◽  
Building Structures ◽  
Dynamic Impact ◽  
Window System ◽  
Window Systems ◽  
Extreme Load

In recent years, glass, and glass facades are increasingly used as part of building structures. Due to its functions, glass is used in commercial, residential, or strategic buildings, such as airports, stations, or offices. However, window system is subject to several forms of the load. This can be an extreme load in the form of an explosion, an earthquake, or other types of loads, such as their wind load, or dynamic impact. In the article, we focused on an overview of several norms, standards, and research that address the issue of resilience of window systems. The aim of the article was to identify the parameters that are examined in various tests in the standards. The investigated parameters of windows in a manual attempt at burglary, impact test, and explosion were discussed in the article.

Sign in / Sign up

Export Citation Format

Share Document