Fatigue & Fracture of Engineering Materials & Structures最新文献

{"title":"Fatigue Assessment of Copper-Brazed Stainless-Steel Joints for Plate Heat Exchangers","authors":"Yiğit Hayta,&nbsp;Sinan Kandemir","doi":"10.1111/ffe.14509","DOIUrl":"https://doi.org/10.1111/ffe.14509","url":null,"abstract":"<p>Cyclic pressures can cause fatigue failure in the brazed joints and plates of the plate heat exchangers (PHEs). This study examines the fatigue behavior of PHEs made from 316L and 304L steels brazed with copper foils employing strain-controlled fatigue tests to explore if 304L could replace 316L in the existing production line for cost reduction. Fatigue tests were conducted at four different load levels with a stress ratio of zero and a frequency of 5 Hz. Finite Element Analysis was used to assess strain distribution and estimate PHE lifespan based on generated strain versus number of cycles to failure curves. The microstructural analysis revealed that copper diffuses more easily into 316L than 304L, and using 50 μm thick foil causes more defects compared with 100 μm foil. It was shown that 316L joints have a significantly increased fatigue life compared with 304L. Both 316L and 304L met the 15-year lifetime requirement set by manufacturers.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"725-737"},"PeriodicalIF":3.1,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14509","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on the Fatigue Performance of Asphalt Mixtures Using Phosphogypsum Whisker as Substitute Filler","authors":"Peng Yin,&nbsp;Baofeng Pan,&nbsp;Yue Liu","doi":"10.1111/ffe.14513","DOIUrl":"https://doi.org/10.1111/ffe.14513","url":null,"abstract":"<div>\u0000 \u0000 <p>This study aims to promote the resource utilization of solid waste in asphalt pavements and improve its fatigue performance. For this, phosphogypsum whisker (PSW) was used as a substitute filler to prepare asphalt mixture. Through pavement performance tests and four-point bending test, the effects of different filler types and substitution ratios on the pavement performance and fatigue performance of asphalt mixtures were investigated. On this basis, the phenomenological method was used to further construct the fatigue performance prediction model. The results indicate that PSW can effectively enhance the high temperature performance and moisture stability of the mixtures but has an adverse effect on low temperature performance. Additionally, the enhancement effect of PSW on pavement performance is more significant than PC42.5 cement (PCC). Both PSW and PCC can enhance the fatigue performance of the mixtures, with PSW exhibiting a more pronounced effect, and the incorporation of substitute fillers helps to curb the degradation trend in fatigue performance. Comparative studies indicate that the error rate of prediction model for various mixtures is significantly below 5%, with low volatility in the prediction results. Furthermore, the variance analysis results reveal that strain has a more pronounced impact on the fatigue performance of the mixtures.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"698-710"},"PeriodicalIF":3.1,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical Behavior of Multiple Edge-Cracked Nanobeams by Taking Into Account the Multiple Cracks Effects","authors":"Sabrina Vantadori,&nbsp;Camilla Ronchei,&nbsp;Daniela Scorza,&nbsp;Andrea Zanichelli","doi":"10.1111/ffe.14479","DOIUrl":"https://doi.org/10.1111/ffe.14479","url":null,"abstract":"<p>By exploiting the stress-driven model, within the Euler–Bernoulli beam theory, a novel nonlocal analytical model is proposed in order to simulate the mechanical behavior of multiple edge–cracked nanobeams by taking into account the multiple cracks effects. According to the present model, the nanobeam is split in correspondence with each of the \u0000<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>n</mi>\u0000 </mrow>\u0000 <annotation>$$ n $$</annotation>\u0000 </semantics></math> edge cracks, thus obtaining \u0000<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>n</mi>\u0000 <mo>+</mo>\u0000 <mn>1</mn>\u0000 </mrow>\u0000 <annotation>$$ n&amp;#x0002B;1 $$</annotation>\u0000 </semantics></math> beam segments, connected to each other by means of massless elastic rotational springs. Firstly, the proposed model is validated by considering experimental data available in the literature, related to bending tests on two cantilever microbeams, each of them containing a single edge crack (i.e., \u0000<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>n</mi>\u0000 <mo>=</mo>\u0000 <mn>1</mn>\u0000 </mrow>\u0000 <annotation>$$ n&amp;#x0003D;1 $$</annotation>\u0000 </semantics></math>). Then, the model is employed to simulate a bending test on a cracked cantilever microbeam containing two edge cracks (i.e., \u0000<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>n</mi>\u0000 <mo>=</mo>\u0000 <mn>2</mn>\u0000 </mrow>\u0000 <annotation>$$ n&amp;#x0003D;2 $$</annotation>\u0000 </semantics></math>) and a parametric study is performed by varying both the crack depth, the distance between cracks, and the characteristic length of the material in order to investigate the influence of such parameters on the microbeam mechanical response.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"684-697"},"PeriodicalIF":3.1,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14479","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Short Crack Behavior of an Additively Manufactured Ti–6Al–4V Alloy Under Ultrasonic High Cycle Fatigue Testing","authors":"Reza Roumina,&nbsp;Robert K. Rhein,&nbsp;J. Wayne Jones,&nbsp;Emmanuelle A. Marquis","doi":"10.1111/ffe.14500","DOIUrl":"https://doi.org/10.1111/ffe.14500","url":null,"abstract":"<p>The high cycle fatigue (HCF) behaviors of an additively manufactured (AM) Ti–6Al–4V alloy with fully lamellar microstructures processed electron beam powder bed fusion (EB-PBF) and wire-fed electron beam directed energy deposition (Sciaky) routes were compared. Ultrasonic fatigue (USF) testing at the stress ratio of <i>R</i> = −1 was applied to monitor the growth of small cracks initiated at surface micronotches. Crack growth rates lower than 10⁻⁸ (<i>m</i>/cycle) at Δ<i>K</i> = 6 MPa·m^1/2 were measured in samples processed by both methods. The finer <i>α</i> lath thickness (~1 μm) of the Sciaky samples resulted in a slower fatigue crack growth rate than the EB-PBF samples with coarser laths. The interaction of cracks with the lamellar microstructures was characterized by electron backscatter diffraction. Crack propagation largely followed the lath interfaces in the Sciaky samples, whereas cracks cut across colonies in the EB-PBF samples. Different fatigue fracture surface characteristics were observed for the EB-PBF and Sciaky samples.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"617-628"},"PeriodicalIF":3.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14500","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contribution of the Self-Heating Method in the Characterization of the Fatigue Damage of Materials With Defects Resulting From Additive Manufacturing","authors":"Sabrine Ziri,&nbsp;Anis Hor,&nbsp;Catherine Mabru","doi":"10.1111/ffe.14506","DOIUrl":"https://doi.org/10.1111/ffe.14506","url":null,"abstract":"<div>\u0000 \u0000 <p>This paper investigates the ability of the self-heating method to characterize the fatigue behavior of 316L stainless steel produced by Laser Powder Bed Fusion. Nearly dense cylinders are built vertically using various process parameters corresponding to various volumetric energy densities. Fatigue specimens are then machined from these cylinders and polished. Fully reversed tension–compression fatigue tests (<i>R</i> = −1) are conducted. The self-heating method is used for the estimation of the fatigue limits. These fatigue limits are compared to results obtained from S-N curves in the high cycle regime. Whatever the set of process parameters, the self-heating curves show three distinct domains of heat dissipation. Thanks to microstructure analysis, fractographic observations, and correlations with S–N curves, these domains can be closely linked to damage mechanisms associated or not with defects.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"942-955"},"PeriodicalIF":3.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Review on Fatigue Characteristics of Nickel-Aluminum Bronze (NAB): Conventionally Fabricated and Additively Manufactured","authors":"Mojtaba Roshan,&nbsp;MohammadBagher Mahtabi,&nbsp;Sara Ranjbar Eslamloo,&nbsp;Alireza Behvar,&nbsp;Meysam Haghshenas","doi":"10.1111/ffe.14499","DOIUrl":"https://doi.org/10.1111/ffe.14499","url":null,"abstract":"<p>Nickel-aluminum bronze (NAB) is extensively utilized across various industries, particularly marine applications due to its exceptional corrosion resistance. The mechanical properties of NAB are highly dynamic, and influenced by factors such as manufacturing processes, operating environments, and microstructure. This variability introduces complexities and challenges in addressing fatigue, the most common failure mode in metals. This review offers a thorough examination of the fatigue properties of NAB in both their conventionally fabricated and additively manufactured (AM) forms. This review explains the mechanisms that modulate fatigue in NAB by analyzing the existing literature and identifying critical factors such as microstructure, defects, and processing parameters. The goal is to improve the comprehension and dependability of NAB by contrasting the fatigue resistance of cast and AM NAB. The ultimate objective of this comprehensive examination is to predict and reduce component failures, thereby extending the service life and performance of NAB components in demanding environments.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"535-565"},"PeriodicalIF":3.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14499","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strain-Controlled Low-Cycle Fatigue Behavior of a Superalloy Considering Extensive Temperature Range and Stress Concentration","authors":"Lingying Luo,&nbsp;Wenjun Wang,&nbsp;Qinzheng Yang,&nbsp;Dong Mi,&nbsp;Xu Wang,&nbsp;Xiaoan Hu","doi":"10.1111/ffe.14503","DOIUrl":"https://doi.org/10.1111/ffe.14503","url":null,"abstract":"<div>\u0000 \u0000 <p>This study aims to investigate the low cycle fatigue (LCF) behavior and fatigue life prediction method of an advanced solid solution–strengthened nickel-based superalloy at various temperatures and stress concentrations. Cylindrical specimens as well as plates with three types of holes (including straight holes and inclined holes with different orientations) were designed and machined for fatigue tests. The test results revealed fatigue life decreases with the temperature increasing. Meanwhile, the fatigue lives of the plate specimens have decreased differently and are strongly dependent on the geometry and orientation of the holes. The key damage parameter related to the fatigue life was found on the strain gradient path. A criterion based on strain gradient is defined as the boundary of the damage process zone. The results show that the prediction was in good agreement with the experimental data, for the majority of the data are within a scatter band of ±2.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"639-652"},"PeriodicalIF":3.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fatigue Behavior of Al/Steel Dissimilar Friction Stir Welds and the Effect of Die-Press Forming","authors":"Yoshihiko Uematsu,&nbsp;Ryousuke Miyata,&nbsp;Paul Dario Toasa Caiza","doi":"10.1111/ffe.14492","DOIUrl":"https://doi.org/10.1111/ffe.14492","url":null,"abstract":"<div>\u0000 \u0000 <p>6016-T4 aluminum (Al) alloy plate was butt welded to the cold-rolled steel plate by a friction stir welding (FSW) technique, and the fatigue properties of Al/steel dissimilar welds were investigated. Some dissimilar welds were die-press formed to the hat shape, and specimens were sampled from the corners of the hat shape, where severe plastic deformation occurred by the die-press forming. The die-press-formed samples had better tensile strengths and hardness than the as-welded ones because of the work hardening. It indicates that the die-press forming is applicable for the Al/steel dissimilar welds. However, large voids were formed around the steel fragments dispersed into Al matrix by die-press forming. Those voids acted as the fatigue crack nucleation sites, thus reducing the fatigue lives of the die-press-formed specimens. When the bottom side of the welds experienced tension plastic deformation, the fatigue strength was the lowest.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"629-638"},"PeriodicalIF":3.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Optimization Procedure to Convert Time-Domain Complex Loadings to the Frequency Domain for Low-Cost Fatigue Analysis","authors":"Raphael Paulino Gonçalves,&nbsp;Cícero Ribeiro de Lima","doi":"10.1111/ffe.14511","DOIUrl":"https://doi.org/10.1111/ffe.14511","url":null,"abstract":"<div>\u0000 \u0000 <p>The time domain is the most widely chosen alternative in mechanical fatigue tests to completely represent random events. However, the main disadvantages of this approach are the long time required to complete the tests and the high cost of the complex equipment. On the other hand, fatigue test in the frequency domain is a potential alternative to overcome these disadvantages. That is, it requires less sophisticated equipment, because it uses only simple actuators instead of servo actuators. Moreover, the duration of the fatigue test is reduced, because the total length of the event is replaced by constant repetitions and constant damage. The objective of this work is to propose and develop a methodology that uses the results of structural fatigue as a starting point, and through an optimization problem solved by the genetic algorithm, it determines which loads/displacements caused them in the frequency domain. The purpose is to assist future developments in fatigue tests, supplanting tests in the time domain without losing the correlation in results.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"653-668"},"PeriodicalIF":3.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on Creep Behaviors of GH3230 Superalloy With Side Notches or a Center Inclined Hole at 900°C and 1000°C","authors":"Qipeng Xu,&nbsp;Cheng Hou,&nbsp;Xiaodong Ren,&nbsp;Jingjing Yang,&nbsp;Xiaochao Jin,&nbsp;Qing Yang,&nbsp;Xueling Fan","doi":"10.1111/ffe.14498","DOIUrl":"https://doi.org/10.1111/ffe.14498","url":null,"abstract":"<div>\u0000 \u0000 <p>GH3230 superalloy is one of the most promising materials for aviation engine hot components, characterized by lots of holes and prone to creep failure. To study the effect of the side notches or center inclined hole on creep behaviors of GH3230 superalloy, a series of creep experiments and numerical simulations based on Sinh creep-damage constitutive model were conducted at 900°C and 1000°C. The influence mechanism of notch strengthening on creep life was analyzed under different notch sizes. The results show that the opposite combination of stress triaxiality and multiaxial stress caused by notches determines the creep damage and life. With the increase of the stress concentration factor, the notch strengthening factor demonstrates a trend of first increasing and then decreasing, whereas the increase in net stress is accompanied by the augmentation of notch strengthening factor under the same stress concentration factor.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"669-683"},"PeriodicalIF":3.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}