Experimental evaluation on mechanical performance of OSB webbed parallel strand bamboo I-joist with holes in the web

2015 ◽  
Vol 101 ◽  
pp. 91-98 ◽  
Author(s):  
Guo Chen ◽  
Hai-tao Li ◽  
Tao Zhou ◽  
Cheng-long Li ◽  
Yu-qi Song ◽  
...  
2021 ◽  
Vol 118 (33) ◽  
pp. e2101296118
Author(s):  
Isabelle Su ◽  
Neosha Narayanan ◽  
Marcos A. Logrono ◽  
Kai Guo ◽  
Ally Bisshop ◽  
...  

Spiders are nature’s engineers that build lightweight and high-performance web architectures often several times their size and with very few supports; however, little is known about web mechanics and geometries throughout construction, especially for three-dimensional (3D) spider webs. In this work, we investigate the structure and mechanics for a Tidarren sisyphoides spider web at varying stages of construction. This is accomplished by imaging, modeling, and simulations throughout the web-building process to capture changes in the natural web geometry and the mechanical properties. We show that the foundation of the web geometry, strength, and functionality is created during the first 2 d of construction, after which the spider reinforces the existing network with limited expansion of the structure within the frame. A better understanding of the biological and mechanical performance of the 3D spider web under construction could inspire sustainable robust and resilient fiber networks, complex materials, structures, scaffolding, and self-assembly strategies for hierarchical structures and inspire additive manufacturing methods such as 3D printing as well as inspire artistic and architectural and engineering applications.


Author(s):  
J. Vijaya Sagar Reddy ◽  
G. Ramesh

Web applications are the most widely used software in the internet. When a web application is developed and deployed in the real environment, It is very severe if any bug found by the attacker or the customer or the owner of the web application. It is the very important to do the proper pre-analysis testing before the release. It is very costly thing if the proper testing of web application is not done at the development location and any bug found at the customer location. For web application testing the existing systems such as DART, Cute and EXE are available. These tools generate test cases by executing the web application on concrete user inputs. These tools are best suitable for testing static web sites and are not suitable for dynamic web applications. The existing systems needs user inputs for generating the test cases. It is most difficult thing for the human being to provide dynamic inputs for all the possible cases. This paper presents algorithms and implementation, and an experimental evaluation that revealed HTML Failures, Execution Failures, Includes in PHP Web applications.


2017 ◽  
Vol 109 ◽  
pp. 113-121 ◽  
Author(s):  
Tejaswi Saran Pilla ◽  
Pranay Kumar Goud Sunkari ◽  
Sai Laahiri Padmanabhuni ◽  
Sachu Sasidharan Nair ◽  
Raja Sekhar Dondapati

2004 ◽  
Vol os-13 (4) ◽  
pp. 1558925004os-13
Author(s):  
Behnam Pourdeyhimi ◽  
Amy Minton ◽  
Mike Putnam ◽  
Han Seong Kim

Hydroentanglement describes a versatile process for manufacturing nonwoven fabrics using fine, closely spaced, high-velocity jets of water to entangle loose arrays of fibers. The resultant fabrics rely primarily on fiber-to-fiber friction to achieve physical integrity and are characterized by relatively high strength, flexibility, and conformability. These technologies can use efficiently the majority of all types of fibers and produce fabrics that could achieve properties equivalent to wovens. To develop a method for predicting the mechanical performance of hydroentangled nonwovens, one must first gather critical information about the materials, the web and the process to establish a detailed knowledge base. The first step in this process is to establish the role that the hydroentangling process parameters play in controlling the performance of the product. One must establish how efficient entanglement is attained, how such entanglement is translated into tensile and other physical properties as well as understanding the role of the intrinsic fiber properties that interact with the process. This is the first in a series of papers planned for dealing with structure-process-property relationships in hydroentangled nonwovens.


2018 ◽  
Vol 67 ◽  
pp. 234-245 ◽  
Author(s):  
F. Stazi ◽  
F. Tittarelli ◽  
F. Saltarelli ◽  
G. Chiappini ◽  
A. Morini ◽  
...  

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