| 000 -LEADER |
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| fixed length control field |
03898nam a22001577a 4500 |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER |
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| Classification number |
670 |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Sher, Muhammad Gul |
| 245 ## - TITLE STATEMENT |
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| Title |
Design of Additive Manufactured Hybrid Lattice Structures for Enhanced Mechanical Performance / |
| Statement of responsibility, etc. |
Muhammad Gul Sher |
| 264 ## - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Place of production, publication, distribution, manufacture |
Islamabad : |
| Name of producer, publisher, distributor, manufacturer |
SMME- NUST; |
| Date of production, publication, distribution, manufacture, or copyright notice |
23025 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
77p. |
| Other physical details |
Soft Copy |
| 500 ## - GENERAL NOTE |
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| General note |
By enabling the manufacture of sophisticated lattice structures with tailored mechanical qualities,<br/>additive manufacturing has changed the fabrication of complex geometries. This work offers a<br/>hybrid lattice design meant to enhance mechanical performance and energy absorption by<br/>combining bending-dominated face-centered cubic (FCC) cells with stretch-dominated Iso Truss<br/>cells. Systematically created were nine separate hybrid lattice configurations made up of linked<br/>face-centered cubic (IFCC) and hybrid designs marked HS1 through HS5. Selected for its<br/>biodegradability and beneficial mechanical qualities, polylactic acid (PLA) was employed to<br/>construct the structures utilizing the fused deposition modeling (FDM) technique. Essential for<br/>correct performance assessment, the manufacturing technique was honed to ensure accuracy and<br/>structural integrity.<br/>Mechanical behavior and energy absorption characteristics of the suggested lattice architectures<br/>were evaluated using finite element models. Under quasi-static compression loads, the<br/>simulations produced knowledge on stress distribution, deformation patterns, and expected failure<br/>mechanisms. Quasi-static compression tests were done to confirm the modeling findings and<br/>explore the real deformation processes. The experimental setting followed defined testing<br/>techniques to assure the reliability and repeatability of the findings. The results suggested that<br/>the unique hybrid lattice structure (IFCC) displayed increased mechanical performance compared<br/>to homogeneous FCC and ISO truss structures, notably in load-bearing capacity, stiffness, and<br/>specific energy absorption (SEA). The inclusion of a layered staking hybrid lattice architecture<br/>boosted mechanical performance and transformed the deformation process to a more controlled<br/>layer-by-layer failure mode. The IFCC hybrid lattice acquired a specific energy absorption (SEA)<br/>of 3.93 kJ/kg. Among the layered hybrid topologies, HS4 displayed the greatest SEA of 5.96<br/>kJ/kg, representing increases of 332% and 555% compared to homogeneous FCC and ISO truss<br/>structures, respectively. The results emphasize the potential of hybrid lattice structures to produce<br/>customized mechanical characteristics in energy-absorbing applications, aiding future<br/>improvements in lightweight, high-performance materials. shown that some hybrid<br/>arrangements, notably HS4 and HS5, exhibited increased energy absorption and structural integrity<br/>compared to alternative designs. The arrangements displayed a synergistic impact by successfully<br/>combining the positive features of both bending-dominated and stretch-dominated cells. In<br/>contrast, designs like HS3 and IFCC demonstrated modest energy dissipation, typified by varied<br/>deformation behaviors that indicated a poor balance between stiffness and energy absorption.<br/>The study underlines the need of combining varied lattice geometry to get specific mechanical<br/>characteristics. Utilizing the geometric and material flexibility of additive printing allows the<br/>construction of lattice structures suited for specific uses. This research gives substantial insights<br/>for the production of lightweight, high-performance materials useful in energy-absorbing<br/>situations, such as protective equipment, automobile components, and aircraft frameworks. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
MS Design and Manufacturing Engineering |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Supervisor : Dr. Muhammad Rizwan ul Haq |
| 856 ## - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="http://10.250.8.41:8080/xmlui/handle/123456789/51711">http://10.250.8.41:8080/xmlui/handle/123456789/51711</a> |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
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| Koha item type |
Thesis |
