scholarly journals Introduction of the Intermeshed Steel Connection—A New Universal Steel Connection

Buildings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 37 ◽  
Author(s):  
Salam Al-Sabah ◽  
Debra F. Laefer ◽  
Linh Truong Hong ◽  
Minh Phuoc Huynh ◽  
Jia-Liang Le ◽  
...  
Keyword(s):  
Structural Steel ◽  
Steel Frames ◽  
Digital Manufacturing ◽  
Advanced Manufacturing ◽  
Test Results ◽  
Construction Sector ◽  
Limited Impact ◽  
Contact Points ◽  
Steel Connection ◽  
Manufacturing Techniques

Digital manufacturing has transformed many industries but has had only a limited impact in the construction sector. To capitalize on advanced manufacturing techniques, this paper introduces a radically new connection approach for gravity structural steel frames. The proposed intermeshed steel connection (ISC) exploits robotic abilities to cut structural steel member ends precisely to accelerate deployment and offer better disassembly options over existing approaches. Forces are transferred through common bearing surfaces at multiple contact points, and connections can be secured by small locking pieces. This paper introduces the geometry, manufacturing, and initial analysis and test results of the connection. The paper demonstrates the ability of the connection to (1) be manufactured within current industrial tolerances, (2) be erected and disassembled, and (3) perform at expected design levels.

Intermeshing: A New Concept For Rapid Steel Erection

2019 ◽  
Author(s):  
Salam Al-Sabah ◽  
Debra Laefer ◽  
Linh Truong-Hong
Keyword(s):  
Structural Steel ◽  
Three Dimensional ◽  
Steel Bridges ◽  
Digital Manufacturing ◽  
Initial Analysis ◽  
Contact Points ◽  
Steel Connection ◽  
Welding Forces ◽  
And Robotics ◽  
Steel Cutting

<p>Three-dimensional intermeshing of steel enabled by advanced digital manufacturing holds the potential to radically change how steel bridges and buildings are connected. This paper presents the concept of the first universal structural steel connection in over 100 years. The proposed Intermeshed Steel Connection (ISC) exploits recent advances in steel cutting technologies and robotics to shape member ends precisely. This vastly reduces on-site bolting and welding. Forces are transferred through common bearing surfaces at multiple contact points. The new connection is designed to accelerate structural steel deployment and offer better disassembly options. This paper introduces the geometry, manufacturing, and initial analysis of the connection approach, which holds the potential to be robust, secure, scalable, and faster to erect.</p>

Applications of digital manufacturing to steel frames: The Intermeshed Steel Connection

ce/papers ◽  
2021 ◽  
Vol 4 (2-4) ◽  
pp. 817-824
Author(s):  
Salam Al‐Sabah ◽  
Debra Laefer ◽  
Linh Truong Hong ◽  
Minh Phuoc Huynh ◽  
Jia‐Liang Le ◽  
...  
Keyword(s):  
Steel Frames ◽  
Digital Manufacturing ◽  
Steel Connection

Experimental Study on Steel Frames Infilled with Sandwich Composite Panels

2011 ◽  
Vol 243-249 ◽  
pp. 499-505
Author(s):  
Can Xing Qiu ◽  
He Tao Hou ◽  
Wei Long Liu ◽  
Ming Lei Wu
Keyword(s):  
Seismic Design ◽  
Steel Frames ◽  
Strength Degradation ◽  
Hysteretic Behavior ◽  
Sandwich Composite ◽  
Viscous Damping ◽  
Test Results ◽  
Ductility Index ◽  
Damage Process ◽  
Seismic Behaviors

A model of full scale one-bay, one storey was tested under low cyclic loading in order to study the hysteretic behavior of steel frames with sandwich composite (SC) panels. According to the failure pattern and damage process of test specimen, seismic behaviors were evaluated. Hysterics loops, skeleton curves, curves of strength degradation, and curves of stiffness degradation, ductility index and viscous damping coefficient were analyzed. Test results show that the failures of panels mainly occurred around the embedded parts, but compared with traditional panels and walls, SC panels exhibit a better integration. The connection between panel and steel frame is vital to the mutual work of the two parts. Finally, seismic design recommendations based on the analysis of ductility index and energy dissipation of the structures are presented.

scholarly journals 3D Printed Chromophoric Sensors

Chemosensors ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 317
Author(s):  
Zachary Brounstein ◽  
Jarrod Ronquillo ◽  
Andrea Labouriau
Keyword(s):  
Thermal Stability ◽  
3D Printing ◽  
Material Properties ◽  
Chemical Structure ◽  
Elevated Temperatures ◽  
Advanced Manufacturing ◽  
Color Changes ◽  
Printed Sensors ◽  
3D Printed ◽  
Manufacturing Techniques

Eight chromophoric indicators are incorporated into Sylgard 184 to develop sensors that are fabricated either by traditional methods such as casting or by more advanced manufacturing techniques such as 3D printing. The sensors exhibit specific color changes when exposed to acidic species, basic species, or elevated temperatures. Additionally, material properties are investigated to assess the chemical structure, Shore A Hardness, and thermal stability. Comparisons between the casted and 3D printed sensors show that the sensing devices fabricated with the advanced manufacturing technique are more efficient because the color changes are more easily detected.

Study on Architecture and Implement Strategy of Green Remanufacturing Management

2011 ◽  
Vol 467-469 ◽  
pp. 1639-1644
Author(s):  
De Wei Guo ◽  
Zhi Gang Jiang
Keyword(s):  
Development Strategy ◽  
Production Management ◽  
Green Manufacturing ◽  
Management Mode ◽  
Advanced Manufacturing ◽  
The Sustainable Development ◽  
Content System ◽  
Manufacturing Techniques ◽  
Mode Of Development ◽  
Research Situation

Green remanufacturing management, a sustainable management mode of development strategy, integrated the philosophy of green manufacturing and advanced manufacturing techniques, deeply implementing the reduction of resource consumption and environmental impact. It is the important link in the multi-lifecycle engineer of the products, which can effectively manage each link in the remanufacturing process of the products. In this paper, the connotation and characteristics of the green remanufacturing management were analyzed, and according to the current research situation of green remanufacturing management mode, the architecture including theoretical basis, content system and supporting techniques were proposed. On the basis of that, the key stage of the content structure: end-of-life management of recovery product, remanufacturing production management, performance assessment of remanufacturing product and reuse of remanufacturing product were expatiated in detail. In the end, the application strategy of the green remanufacturing management was discussed from the view of the sustainable development.

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