SAMPE Journal最新文献

Five-Axis Additive Manufacturing of a Thermoset Composite Formulation for Thermal Protection Systems 用于热保护系统的热固性复合材料配方的五轴快速成型技术

IF 0.2 4区材料科学

SAMPE Journal Pub Date : 2024-07-01 DOI: 10.33599/sj.v60no4.04

A. Kennedy, Z. McNulty, Steven Nutt

引用次数: 0

Comparative Analysis of Water-Induced Response in 3D-Printed SCF/ABS Composites under Controlled Diffusion 受控扩散条件下三维打印 SCF/ABS 复合材料中水诱发反应的对比分析

IF 0.2 4区材料科学

SAMPE Journal Pub Date : 2024-07-01 DOI: 10.33599/sj.v60no4.02

Samiul Alam, Md Tareq Hassan, Joshua Merrell, Juhyeong Lee

{"title":"Comparative Analysis of Water-Induced Response in 3D-Printed SCF/ABS Composites under Controlled Diffusion","authors":"Samiul Alam, Md Tareq Hassan, Joshua Merrell, Juhyeong Lee","doi":"10.33599/sj.v60no4.02","DOIUrl":"https://doi.org/10.33599/sj.v60no4.02","url":null,"abstract":"Additive manufacturing (AM) or 3D-printing of fiber-reinforced composites (FRCs) has garnered significant interests for its versatility in creating intricate parts and rapid prototyping due to cost-effectiveness. Although short fiber-reinforced thermoplastic composites are challenging to manufacture, their mechanical properties can be easily tailored by adjusting fiber type, orientation, and volume fraction. However, void formation during printing is a key issue, impacting mechanical properties and facilitating water ingression, affecting long-term durability. This work studies water diffusion characteristics and the associated hydro-aging of 3D-printed short carbon fiber (SCF)/acrylonitrile butadiene styrene (ABS) composites with controlled water diffusion. Effects of material type (ABS and SCF/ABS), 3D-printing path (horizontal and vertical filament orientation), and diffusion surface (uni-directional and bi-directional diffusion) on water diffusion coefficient and maximum water absorption level are characterized to ensure the long-term durability of 3D-printed ABS and SCF/ABS composites. Baseline representative volume element-based finite element (RVE-FE) diffusion models were developed based on micro-computed tomography (micro-CT) image analysis to understand water diffusion characteristics. This work proves that the SCF/ABS composite is more resistive to hydro-aging than neat ABS due to the SCFs’ hydrophobic nature. SCF/ABS composites, while providing distinct advantages over pure ABS in terms of mechanical properties, could also be more effective against water environments.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141699411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electroplating Additively Manufactured Honeycomb Structures to Increase Energy Absorption Under Quasi-Static Crush 电镀增材制造蜂窝结构，提高准静态挤压下的能量吸收能力

IF 0.2 4区材料科学

SAMPE Journal Pub Date : 2024-07-01 DOI: 10.33599/sj.v60no4.05

Colleen M Murray, Sean Wise, Norman M. Wereley

{"title":"Electroplating Additively Manufactured Honeycomb Structures to Increase Energy Absorption Under Quasi-Static Crush","authors":"Colleen M Murray, Sean Wise, Norman M. Wereley","doi":"10.33599/sj.v60no4.05","DOIUrl":"https://doi.org/10.33599/sj.v60no4.05","url":null,"abstract":"Honeycomb (HC) has been used in energy absorption applications due to its high stiffness and low density. Metallic HC are used for energy absorption applications, however, these metallic structures can be challenging to manufacture if complex geometric features designed to improve energy absorption are used, which motivates the use of additive manufacturing (AM). Metal AM methods include powder bed fusion (PBF) and direct energy deposition (DED). In addition to capital equipment cost, these processes possess challenges that include a required inert environment, powder handling, final part porosity, residual stresses, and nonuniform surface finish. These concerns can be alleviated through the use of polymer AM, however, polymeric parts exhibit brittle failure and have a lower stiffness than metallic HC structures. In this study, a low-cost 3D polymer printing method, stereolithography (SLA), is combined with a conventional electroplating process to fabricate a metal-plastic composite HC structure with energy absorption capability much greater than of a plastic HC structures of the same nominal volume. SLA parts have a smooth surface, so that the surface finish is at least as uniform after electroplating as the SLA part. The energy absorption characteristics of the electroplated HC is studied to determine how these energy absorbing materials can be manufactured at reduced cost. Our study confirms that the metal-plastic composite HC increases both the crush strain range and the mean crush stress of these samples, resulting in metal-plastic composite HC structures with substantially increased energy absorption. This study also examines how buckling initiators (BIs), or diamond shaped holes located at 50, 75, and 100% of the height of the hexagonal cell vertices, can influence energy absorption performance. This study shows that it is feasible to fabricate electroplated HCs, using an SLA preform, to achieve a substantial increase in energy absorption over using SLA alone.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141701644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of Extruder with Metering Section Removed and Replaced with Gear Pump for Machine Space Savings in Large Format Additive Manufacturing 设计挤出机，去掉计量部分，代之以齿轮泵，为大幅面增材制造节省机器空间

IF 0.2 4区材料科学

SAMPE Journal Pub Date : 2024-07-01 DOI: 10.33599/sj.v60no4.01

E. Piatt, Vysakh Venugopal, Sam Anand

{"title":"Design of Extruder with Metering Section Removed and Replaced with Gear Pump for Machine Space Savings in Large Format Additive Manufacturing","authors":"E. Piatt, Vysakh Venugopal, Sam Anand","doi":"10.33599/sj.v60no4.01","DOIUrl":"https://doi.org/10.33599/sj.v60no4.01","url":null,"abstract":"Since its creation, the plastic extrusion screw has been applied to several manufacturing processes. One of the newest applications of this technology has been 3D printing. Using an extrusion screw allows higher extrusion rates than direct drive extruders using a filament spool. This paper further develops the design by decreasing the standard screw length by removing the metering zone and replacing it with a gear pump. This allows for a smaller machine footprint. Extruders are susceptible to surging (inconsistency of the melt pressure and flow rate). Adding a gear pump to the extruder increases flow consistency at the nozzle, but this adds additional length and weight. With the addition of this gear pump-based metering device, the metering section of the screw is redundant and can be removed. By creating a shorter extruder, manufacturers can increase the flow rate without increasing machine size. The proposed extruder design is validated through flow testing and analysis of voids in the bead cross-section with image processing. By showing that a consistent bead can be produced without a metering section in the extruder, this extruder design can print parts with a wide range of materials.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Additive Manufacturing Process Simulation of Laser Powder Bed Fusion and Benchmarks 激光粉末床熔融的快速成型制造过程模拟与基准

IF 0.2 4区材料科学

SAMPE Journal Pub Date : 2024-07-01 DOI: 10.33599/sj.v60no4.03

M. Ghabbour, X. Qu, J. Rome

引用次数: 0

Tailorable Energy Absorbing Cellular Materials via Sintering of Dry Powder Printed Hollow Glass Microspheres 通过烧结干粉印刷中空玻璃微球获得可定制的能量吸收细胞材料

IF 0.2 4区材料科学

SAMPE Journal Pub Date : 2024-05-01 DOI: 10.33599/sj.v60no3.04

Norman Wereley, Jungjin Park, John Howard, Matthew DeMay, Avi Edery

{"title":"Tailorable Energy Absorbing Cellular Materials via Sintering of Dry Powder Printed Hollow Glass Microspheres","authors":"Norman Wereley, Jungjin Park, John Howard, Matthew DeMay, Avi Edery","doi":"10.33599/sj.v60no3.04","DOIUrl":"https://doi.org/10.33599/sj.v60no3.04","url":null,"abstract":"This article examines amorphous glass-based foams as lightweight core materials for crash-resistant structures that offer tailorable energy absorption capabilities. Hollow glass microspheres (HGMs) of different densities are layered using dry powder print- ing (DPP), an additive manufacturing process, and subsequently sintered to consolidate these microspheres into a cellular foam structure. The tuning of energy absorption is achieved in these foams by layering hollow microspheres with different densities and different thickness ratios of the layers. The mechanical response to quasi-static uniax- ial compression of the bilayer foams is also investigated. Bilayer samples a distinctive two-step stress-strain profile that includes first and second plateau stress, as opposed to a single constant density which does not. The strain at which the second plateau occurs can be tuned by adjusting the thickness ratio of the two layers. The resulting tailorable stress-strain profile demonstrates tailorable energy absorption. Tailorability is found to be more significant if the density values of each layer differ greatly. For comparison, bilayer samples are fabricated using epoxy at the interface instead of the co-sintering process. Epoxy-bonded samples show a different mechanical response from the co-sintered sample with a different stress-strain profile. Designing the bilayer foams enables tailoring of the stress-strain profile, so that energy-absorption requirements can be met for a specific impact condition. The implementation of these materials for energy absorption, crashworthiness, and buoyancy applications will be discussed.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141030745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Homogenization Model for Multistable Honeycomb Metastructures with Beam-like Behavior 具有类梁行为的多稳蜂窝结构的均质化模型

IF 0.2 4区材料科学

SAMPE Journal Pub Date : 2024-05-01 DOI: 10.33599/sj.v60no3.03

D. M. Boston, Andres F. Arrieta

引用次数: 0

Thermal and Structural Analysis of A Vascular Cooled Composite Radome 血管冷却复合雷达罩的热学和结构分析

IF 0.2 4区材料科学

SAMPE Journal Pub Date : 2024-05-01 DOI: 10.33599/sj.v60no3.02

Geoffrey J. Frank, Jeffrey P. Massman, Philip R. Barnett, Dennis P. Butcher

引用次数: 1

High-performance Thermoplastic-based Magnetic Composites 高性能热塑性磁性复合材料

IF 0.2 4区材料科学

SAMPE Journal Pub Date : 2024-05-01 DOI: 10.33599/sj.v60no3.01

O. Arigbabowo, Jitendra S. Tate, W. Geerts

{"title":"High-performance Thermoplastic-based Magnetic Composites","authors":"O. Arigbabowo, Jitendra S. Tate, W. Geerts","doi":"10.33599/sj.v60no3.01","DOIUrl":"https://doi.org/10.33599/sj.v60no3.01","url":null,"abstract":"Magnetic polymer-based composites combine the cost-effectiveness, low density, and manufacturing flexibility of conventional polymers with the unique characteristics of magnetic powders/fillers to form multi-functional magneto polymeric composites that offer superior properties to conventional materials. At higher temperatures, magnetic properties change significantly and the particles within the magnetic powders experience sporadic motion due to the heat which causes misalignment of the magnetic domains, leading to a decrease in magnetism. Due to these adverse temperature effects, high-performance polymers such as polyetheretherketone (PEEK), polyetherimide (PEI), high-performance polyamides (HPPA), or other high-temperature thermoplastics have been considered suitable matrix for the magnetic fillers, thereby creating a much wider usage for magneto polymeric composite in applications that requires higher temperature (typically above 175°C). Thus, this review discusses the fabrication processes-injection molding, fused filament fabrication; magnetic performance, and applications of high-performance thermoplastic-based magnetic composites that can be viable for stringent engineering devices such as sensors, actuators, motors, and generators.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141025178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization Approach for Compression Molded Discontinuous Fiber Thermoplastic Composites 压缩成型非连续纤维热塑性复合材料的表征方法

IF 0.2 4区材料科学

SAMPE Journal Pub Date : 2024-01-01 DOI: 10.33599/sj.v60no1.02

J. Tomblin, Rachael Andrulonis, Royal S. Lovingfoss, Brandon L. Saathoff, Cindy Ashforth, Curtis Davies

{"title":"Characterization Approach for Compression Molded Discontinuous Fiber Thermoplastic Composites","authors":"J. Tomblin, Rachael Andrulonis, Royal S. Lovingfoss, Brandon L. Saathoff, Cindy Ashforth, Curtis Davies","doi":"10.33599/sj.v60no1.02","DOIUrl":"https://doi.org/10.33599/sj.v60no1.02","url":null,"abstract":"Thermoplastic composites show potential in increasing the manufacturing production rate of composite aerospace structures. This is largely due to their ability to be consolidated quickly using automated processes. A variety of reinforced thermoplastic material forms are offered that can be processed multiple ways in order to meet structural performance requirements at the necessary production volumes without substantial compromise. Intrinsically, this requires generating a significant amount of statistically-based material property data for each unique material and process combination. Currently, the National Institute for Aviation Research (NIAR) and the Federal Aviation Administration (FAA) are developing a material qualification framework for compression molded discontinuous fiber thermoplastic composites in consensus with industry experts. To aid in the development of the qualification framework, a screening test matrix was formed to identify the key processing parameters and evaluate the appropriate test methods and specimen sizes. Three main variables were considered in the trial testing: reinforcement size, material flow behavior and panel thickness. The effect of these key processing parameters on the mechanical properties are discussed along with guidelines for testing and characterization.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140520684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0