Showing papers in "CIRP Annals in 2017"

TL;DR: In this article, the authors propose a reference model based on the concept of Skin Model Shapes, which serves as a digital twin of the physical product in design and manufacturing, and address model conceptualization, representation, and implementation as well as applications along the product life cycle.

TL;DR: In this article, the service properties of AM parts are described, including physical, mechanical, optical and electrical properties, and an additive manufacturability index is proposed, based on the seven categories of ISO/ASTM AM categories.

TL;DR: In this paper, an overview over laser-based additive manufacturing with comments on the main steps necessary to build parts to introduce the complexity of the whole process chain is presented. But despite good sales of AM machines, there are still several challenges hindering a broad economic use of AM.

TL;DR: The hot stamping processes of quenchable steel sheets potentially offer not only small forming load and high formability, but also high strength and no springback by die quenching.

TL;DR: Learning factories present a promising environment for education, training and research, especially in manufacturing related areas which are a main driver for wealth creation in any nation as mentioned in this paper. But, while n...

TL;DR: Phenomenological and physically-based constitutive models commonly used in machining simulations are presented and discussed and thermo-physical properties for thermal modelling of the machining process, and microstructure data for the chip and workpiece together with relevant experimental methods are discussed.

TL;DR: A new architecture design approach for modularised design of CPPS is presented and new capabilities in designing with modular construction kits, simulating functional behaviour and validating with virtual, functional prototype are introduced.

TL;DR: In this article, a comprehensive view at information-logistic waste is shown while regarding recording, handling, processing, analysing and optimising (information-) processes, and a holistic approach extends proven methods of Lean-production while systematically mapping opportunities for digitalisation to derive measures for improvement.

TL;DR: In this paper, the authors report a comprehensive manufacturing energy analysis of the popular LMO-graphite battery pack used on the Nissan Leaf and the Chevrolet Volt, with data collected and modelled from real industrial processes.

TL;DR: In this article, the authors focus on the post-processing of 316L steel components made using selective laser melting (SLM), and the integrity of the surface (including surface defects) is influenced by post-process conditions as well as the sequence of postprocesses, which perform functions such as eliminating surface defects generated during SLM, altering the surface roughness, and imparting compressive residual stress.

TL;DR: In this paper, an innovative integrated motion planning and scheduling methodology that provides a set of robot trajectories for each task as well as an interval on the robot execution time for each trajectory and optimizes, at relevant time steps, a task plan, minimizing the cycle time through trajectory selection, task sequence and task allocation.

TL;DR: In this paper, a part machining process is simulated to predict the cutting forces, torque, power, chip load and other process states, which are accessed by a real time monitoring system which detects the tool failure and adaptively adjusts the feed by predicting the forces from the feed and spindle drive motor current supplied by CNC.

TL;DR: In this paper, a data-driven technique based on Deep Belief Network (DBN) is investigated to reveal the relationship between MRR and polishing operation parameters such as pressure and rotational speeds of the wafer and pad.

TL;DR: In this paper, the most relevant technologies, assesses their impact and the readiness of industry to adopt them, identifies the still-open issues, and concludes with future research requirements.

TL;DR: In this paper, an overview of innovative approaches in ICT and robotics for flexible control and automation of assembly lines and systems is presented. But the authors focus on the control and reconfiguration of the assembly lines.

TL;DR: In this article, a novel procedural approach for prescriptive maintenance planning in manufacturing companies is proposed, where multivariate data analysis and simulation tools are utilized to analyse historical data (product quality data, machine failure data and production program data).

TL;DR: In this paper, the authors presented elements of new strategy for ensuring human safety during various levels of interaction with heavy-load industrial robots, where different kinds of safety functions are developed and analyzed.

TL;DR: A conceptual approach for the reconfiguration of Smart Products is introduced, which considers dynamical, virtual models of each real product instance using the concept of virtual product twins and an Internet of Things platform.

TL;DR: In this paper, a flexible assembly cell, including a dual arm robot in cooperation with humans for assembly tasks typically performed by operators, is presented, where the robot performs these tasks both in isolation and cooperation with the human.

TL;DR: In this paper, the influence of the tilt angle of the spindle on the generated surface quality is investigated by kinematic simulations and experiments, and recommendations are given to enhance process stability and surface quality.

TL;DR: A new logic and method for tackling the major challenges of design for functional safety and IT security is proposed, essentially based on reducing the design solutions’ complexities by integration.

TL;DR: In this article, a local stress method for fatigue analysis of additive manufacturing lattice structures with complex unit cell designs is presented. And the fatigue performance of Ti6Al4V and CoCr structures produced by SLM is assessed with this method.

TL;DR: This paper presents a new approach, in which the use of Linear Programming (based on the ‘pseudo-jerk’ concept) is combined with a novel windowing algorithm to handle long toolpaths, which results in an algorithm with linear computational complexity, and the ability to process long tool paths in a parallel manner.

TL;DR: In this article, a hot stamping process of heat-treatable aluminium alloy sheets using quick heating below the solution treatment temperature was developed to improve the formability and productivity in conventional cold stamping of high-strength aluminium aircraft parts.

TL;DR: In this article, a geometrical quality assessment of an additive manufacturing product is presented, which includes a process oriented geometry model to predict the surface roughness and dimensional deviations, and a Geometrical simulation tool to assess the impacts of these deviations on the geometry of the joint.

TL;DR: In this article, a system was developed in which ultrasonic cavitation caused micro-bubble generation directly upstream of the nozzle outlet, which boosted removal rate by up to 380%.

TL;DR: In this paper, a new practical method that supports designers to create service modules by extending the DSM (Design Structure Matrix) is proposed, which has been applied to existing PSSs by an elevator manufacturer.

TL;DR: In this paper, an automated identification of machine dynamics and auto-tuning of the controller using the same actuator and vibration sensor is presented, which has been experimentally demonstrated with simple and advanced controllers which led to notable increases in chatter free material removal rates.

TL;DR: In this article, a new analytical model is presented to predict the topography and roughness of the machined surface in 5-axis ball-end milling operation for the first time.

TL;DR: In this article, a robust stability analysis of turning is presented for flexible workpiece by modeling the varying dynamic properties due to the material removal process by means of finite element method, where the frequency response function is traced along tool position.