This paper presents a comprehensive review of recent advancements in surface engineering metals, encompassing techniques, characterization methods and applications. The study emphasizes the significance enhancing performance functionality metallic materials various industries. discusses different techniques employed engineering, including physical such as thermal spray coatings chemical electroplating. It also explores used to assess microstructural, topographical, mechanical properties...

Purpose Polyetheretherketone (PEEK) is used to manufacture biomedical implants because it has a high strength-to-weight ratio and strength biocompatible. However, the use of fused deposition modeling print PEEK results in low crystallinity. This study aims Taguchi method optimize printing factors obtain highest tensile printed object. The annealing effect on object crystallinity are also investigated. Design/methodology/approach determines including speed, layer thickness, temperature...

In this paper, the association between Smith-Watson-Topper (SWT) parameter and fracture surface topography is studied in additively manufactured maraging steel exposed to variable-amplitude fatigue loading. The post-failure surfaces were examined using a non-contact 3D measuring system entire method. focal point on correspondence characteristics, articulate by SWT parameter, features, represented areal, volume, fractal dimension parameters. A life prediction model based factors proposed....

An investigation of mechanical properties Ti6Al4V produced by additive manufacturing (AM) in the as-printed condition have been conducted and compared with wrought alloys. The AM samples were built Selective Laser Melting (SLM) Electron Beam (EBM) 0°, 45° 90°—relative to horizontal direction. Similarly, also cut tested same directions relative plate rolling microstructures significantly different on all samples. α′ martensite was observed SLM, acicular α EBM combination both alloy. had...

Printing ceramic/metal parts increases the number of applications in additive manufacturing technology, but printing different materials on same object with mechanical properties will increase difficulty printing. Multi-material technology is a solution. This study develops novel tape-casting 3D that uses bottom-up photopolymerization to fabricate green body for low-temperature co-fired ceramics (LTCC) consist ceramic and copper. The composition copper slurries optimized allow without...

This study aims to develop a fully digital workflow for the fabrication of customized mandibular advancement devices (MAD). Customized MADs are used treat obstructive sleep apnea and typically require 8-10 days fabricate through traditional manufacturing. The currently designed methodology considerably shortens this timescale 2-3 days, providing viable alternative methods. process integrates intraoral scanning, computer-aided modeling, additive manufacturing using DD guide material light...

Purpose This study aims to develop a low-cost additive-subtractive hybrid machine equipped with reverse scanning fabricate high-precision dental surgical guides. The major focus of developing the additive manufacturing technology is achieve clinical precision tools at an affordable price. Design/methodology/approach designed consists self-developed vat-photopolymerization-based 3D printer that can integrated scanner will analyze fabricated part and evaluate dimensional discrepancies. Based...

Purpose This research focuses on developing a dual-nozzle slurry-based extrusion 3D printer capable of fabricating intricate zirconia structures. The designed combines material and photopolymerization technologies to improve diversity, precision cost-effectiveness. Design/methodology/approach design incorporates ultraviolet curing instantly cure extruded slurry thereby, eliminating the need for step-wise procedure. Printing parameters were optimized achieve high-quality prints, supports made...

This paper focuses on comparing the three microscopic measurement techniques, confocal, focus variation, and point for focus, evaluation of entire fracture surface topographies. The measurements were performed using a Sensofar S Neox 3D optical profilometer Mitutoyo QV Apex 302 vision measuring system. test specimens required printed through laser powder bed fusion (LPBF) technology two materials: Stainless Steel 316L Inconel 718. printing was with power 200 W, scanning speed 800 mm/s, layer...

Selective laser melting has a great potential to manufacture biocompatible metal alloy scaffolds or implants with regulated porosity structure. This study uses five face-centered cubic (FCC) lattice structures, including FCC, FCC-Z, S-FCC, S-FCC-Z, and FCC-XYZ. Specimens different structures are fabricated using two energy densities, 71 J/mm3 125 J/mm3. Density, tensile, compressive flexural test results exhibit the effect of parameters structure geometries on mechanical properties. The...

The aims of this study were to examine the effect implant neck design and cortical bone thickness using 3D finite element analysis analyse stability clinical evidence based on micromotion principal stress. Four commercial dental implants for a type IV maxillary segments created. Various parameters considered, including osseointegration condition, loading direction thickness. Micromotion stresses used evaluate failure overloading, respectively. It was found that maximum stress peri-implant...

Purpose Fused deposition modeling (FDM) nowadays offers promising future applications for fabricating not only thermoplastic-based polymers but also composite PLA/Metal alloy materials, this capability bridges the need metallic components in complex manufacturing processes. The research is to explore manufacturability of multi-metal parts by printing green bodies PLA/multi-metal objects, carrying these objects debinding process and varying sintering parameters. Design/methodology/approach...

We characterized and imaged dental calculus using swept-source optical coherence tomography (SS-OCT). The refractive indices of enamel, dentin, cementum, were measured as 1.625 ± 0.024, 1.534 0.029, 1.570 0.021, 2.097 0.094, respectively. Dental leads strong scattering properties, thus, the region can be identified from enamel with SS-OCT imaging. An extracted human tooth is covered gingiva tissue an in vitro sample for tomographic

Purpose – Bone tissue engineering is an emerging field providing viable substitutes for bone regeneration. Poly(ε‐caprolactone) (PCL) a good candidate scaffold fabrication due to its high mechanical strength and excellent resistance under moist conditions, but hydrophobicity causes cell‐attached difficulties, thus limiting clinical application. The paper aims develop air pressure‐aided deposition system fabricating scaffolds made of synthesized PCL‐PEG‐PCL copolymers validate the...

The study described a novel bone tissue scaffold fabricated by computer-aided, air pressure-aided deposition system to control the macro- and microstructure precisely. porcine marrow stem cells (PBMSCs) seeded on either mPEG-PCL-mPEG (PCL) or mPEG-PCL-mPEG/hydroxyapatite (PCL/HA) composite were cultured under osteogenic medium test ability of osteogenesis in vitro . experimental outcomes indicated that both scaffolds possessed adequate pore size, porosity, hydrophilicity for attachment...

Inconel 718 (IN 718) powder is used for a laser bed fusion (LPBF) printer, but the mechanical properties of as-built object are not suited to cold deep drawing applications. This study uses Taguchi method design experimental groups determine effect various factors on objects produced using an LPBF printer. The optimal printing parameters defined result factor response produce with greatest ultimate tensile strength (UTS), and this specimen post-processing, including heat treatment (HT)...