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Lightweight and strong components are essential for reducing energy consumption and enhancing efficiency. Lattice structures are one such geometry utilized to achieve weight reduction. This study investigates the mechanical properties of various lattice structures fabricated from Maraging Steel (EOS MS1) using the Direct Metal Laser Sintering (DMLS) method. The samples include three distinct cellular geometries: body-centered cubic (BCC), face-centered cubic (FCC), and octet truss configurations, which are subjected to tensile and compressive tests. The primary goal of this research is to evaluate the impact of heat treatment on the mechanical properties of cellular architecture under tensile and compressive loading conditions. Destructive, nondestructive testing, and simulation results were also obtained from different heat treatment processes. It was found that the age-hardened specimens performed the best overall in terms of ultimate tensile/compressive strength and elongation. The top-performing topologies in compression and tension were found to be the octet structure, as they were able to withstand the most loading and straining when compared to the other specimens.
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Material Tests, in Advancing Knowledge on the Performance of Seismic Collectors in Steel Building Structures
Material testing includes concrete compressive strength test and steel tension coupon tests. Concrete cylinder tests were conducted to measure the compressive strength of concrete used for composite slab on MST specimen at different days. Nine 4”x8” concrete cylinders were casted for compressive strength tests. Compressive strength for different days; 14, 21, and 28, were conducted. Compressive strength tests were conducted following ASTM C39. The test were conducted in-house at Lehigh University. Steel tension coupon tests were conducted to measure the material properties of collector specimens and MST shear tab. Plate type 2” gage length tension coupons were used for tensile strength testing. Coupons were extracted from flanges of TFW and AFW specimens, web and shear tab of MST specimen. The tensile strength testings were conducted following ASTM E8.
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- Award ID(s):
- 1662816
- PAR ID:
- 10661915
- Publisher / Repository:
- Designsafe-CI
- Date Published:
- Edition / Version:
- 1
- Subject(s) / Keyword(s):
- Seismic Collector Compressive strength concrete cylinder ASTM C39 Tensile strength tension coupon ASTM E8
- Format(s):
- Medium: X
- Institution:
- Lehigh University/ University of Arizona
- Sponsoring Org:
- National Science Foundation
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