Tool wear is inevitable in manufacturing and affects the surface quality geometric tolerance significantly. A robust efficient tool condition monitoring (TCM) system needed to maximize life, ensure work-piece quality, benefit cost control of manufacturers. This paper presents a systematic singularity analysis approach cutting force vibrations for feature extraction TCM milling. The sensory signals estimated by Holder Exponents (HE), which are determined wavelet transform modulus maxima...

The development of a clear relationship between the multiphase mechanical properties composites and nanomechanical response is major challenge. Most current studies focus on prediction single-phase while neglecting interactions multiphases in composites. To further improve performance ability TiCp/Fe composites, fundamental understanding how matrix phase influence reinforced necessary. In this study, data-physics hybrid-driven model considering proposed to predict TiC particles. addition,...

To enhance the erosion resistance of typical Cr3C2-NiCr coatings, Cr3C2-TiC-NiCrCoMo (NCT) coating was developed and deposited by high-velocity oxygen fuel spray (HVOF). The mechanisms were investigated using numerical simulations experimental methods. A comprehensive calculation model for rate developed, incorporating factors such as properties eroded particles, characteristics coating, conditions erosion. NCT calculated predicted model, accuracy these predictions validated through...

The microstructure evolution of a Mg–Gd–Y alloy was studied using uniaxial tension combined with an electron backscatter diffraction technique. results show that large amounts slip transfer phenomena can be observed around the grain–boundary area after tension, and activation these slips depends largely on misorientation grain boundaries. shows almost randomized misorientation, but transferred traces were preferred at boundaries [0001] axis between 0–30°. Theoretically, materials higher...

The intergranular cracking in the Mg-Gd-Y alloy was investigated by an situ tension test combined with electron backscattered diffraction (EBSD) measurement and digital image correlation (DIC). During test, crack found at triangle point of grain boundary area profuse slip traces. DIC results show that inhomogeneous strain distribution can be area, leads to serious deformation incompatibility this point. This also a weak for initiation, as increases, would extend from along boundary.

In aviation industry, flexural deformation of aluminum beam structures after manufacturing process is inevitable. Since the distortion correcting generally dependent on workers' experience, quality cannot be guaranteed. This one main issues that have baffled further development aerospace industry for a long time. To solve this problem, bilateral rolling which can cause redistribution component stress was proposed to satisfy requirement correction. paper, T-shaped were selected as research...

Extruded Mg-Gd-Y alloy tubes were obtained by using cast ingot and extruded bar billets. Microstructure mechanical properties also studied with two different cooling methods: air water cooling. The result shows that an as billet achieves higher elongation comparing to ingots due favored texture for the activation of basal slip. Using water-cooling method, achieve a yield strength compared method their fine grain size. billets is only 6% large unrecrystallized grains caused inhomogeneous...

For studying the influence of a bilateral slid rolling process (BSRP) on surface integrity thin-walled aluminum alloy structure, and revealing generation mechanism residual stresses, self-designed BSRP appliance was used to conduct experiments. With aid optical profiler, an X-ray stress analyzer, scanning electron microscope (SEM), differences in before after were explored. The internal changing physical as well mechanical properties probed. results show that roughness (Ra) is reduced by...

Laser cladding is proved to be an effective technique repair damaged components. However, the generation of thermal stresses due heat input and temperature gradient during laser process a common issue that leads serious distortion in thin-walled It frustrated correct distorted titanium alloy components on account its physical mechanical properties. In this study, hot sizing method based mechanism creep aging forming applied straighten Ti−6Al−4V part. Initially, local surface part was...

The distortion and dimensional instability are the main problems in machining of thin-walled parts with high-strength aluminum alloys. To ensure accuracy aircraft assembly, correction process is essential. Bilateral rolling has been widely used to correct distorted aerospace industries due introduction proper plastic deformation residual stresses. However, generation redistribution mechanism stresses bilateral remains unclear. This internal was investigated by finite element method (FEM)...

The mild–severe wear transition of aluminum alloys is considered evidence that the changes from a stable state to an unstable state, which great importance in engineering applications. purpose this study evaluate 2195 Al–Li alloy for different loads and elucidate causes behind it. To end, dry sliding tribometric tests were carried out by varying normal load 2 40 N at room temperature. results show change rate can be divided into three distinct stages, including weak growth low (2–4 N),...

Abstract The tribological properties of Al-Li alloys impact the reliability components used in different industrial sectors. In this research, effect normal load on friction and wear extruded spray-formed 2195-T6 alloy is investigated by using a pin-on-disk tester. Through microstructure subsurface, it evaluated that coefficient 2195 decreases from 0.408 to 0.306 increasing (25 N 150 N), while rate increases exponentially. It also analyzed mild-severe transition occurs between 100 125 main...

The rolling correction process can eliminate machining distortions of aluminum alloy 7075-T651 structural parts. thermal stability the corrected parts under action temperature loading, especially macroscopic shape stability, is key to ensure safe service mechanical equipment. In this study, different loads were used postprocess after correction. rolled samples was analyzed by characterizing microstructure and physical properties. results show no obvious change compared in distortion...

The crack-compliance method is an effective means of measuring the inherent residual stresses in EW75M plates. However, complexity calculating compliance matrix data processing makes this impossible for engineering applications. In order to complete modeling pre-processing and results extracting post-processing automatically finite element software ABAQUS, calculation was developed based on secondary development technology ABAQUS user subroutines. "Model Change" "Load Case" were employed...