Christian Böning

Graduation:
Dipl.-Wirtsch.-Ing.
Function:
Manager logistics
Phone:
+49 (0)511 279 76-441
E-Mail:
boening@iph-hannover.de
vCard:
vCard
Xing:
https://www.xing.com/profile/Christian_Boening5

Publications

In production, product-related error costs can be reduced by focusing on human production factors, such as considering human performance fluctuations during the day, when production planning with respect to job-shop scheduling. In this article, the flexible job-shop scheduling problem is extended by considering product-related error costs and logistic costs. Product-related error costs are increased by over stressing the operative workers. Logistic costs are based on work in process and throughput time. This cost-based definition enables a production plan to be simultaneously optimized in respect of both error and logistic costs. The product-related error costs and flexible job-shop scheduling problem are described mathematically and a memetic algorithm is also presented as an approach. Within the memetic algorithm, the evolutionary process is supplemented with a local search procedure to improve the ability of solutions and repair procedures to rectify infeasible solutions. The influence of product-related error costs on the total costs of a production plan within job-shop scheduling is presented.

flexible job shop scheduling, memetic algorithm, human perfor-mance fluctuation, error costs

Considering production planning and control, lot sizing is a very important task. Lot sizes are usually resorted to lot size dependent order and storage costs. However, models for lot sizes ignore the aspect of lot size dependent maintenance costs. For forging companies the tool wear has a great economic importance, because the tooling costs represents a major factor in production costs.

production planning and control, lot sizing, process stability

Assembling large-scale products involves frequent process interruptions. To reduce the duration of an assembly stop, the WZL of RWTH Aachen University and the IPH Hannover developed an approach which is able to identify alternative assembly plans and to evaluate them on the basis of the logistic performance objectives. Stock, capacity utilization, lead time and adherence to schedule are transferred into costs and assembly plans are thus comparable based on one parameter.

production planning and control, assembly, logistical objectives

The use of 3D printing techniques gives manufacturing companies the opportunity to implement new production processes and to unlock economic potentials. In this article a research project is presented, which aims to analyse the use of build-operate-transfer models with 3D printers. Thereto an evaluation and implementation tool for build-operate-transfer models is being designed, which considers the perceptions of the suppliers and the costumers.

3D printer, build-operate-transfer models, production organization, profitability, production logist

When designing logistics processes, the demand for an environmental sustainability is increasing. Often companies have a choice between different alternatives, which costs and environmental consequences may differ. This paper presents the results of a research project that aimed to develop a method for the ecological and cost-based selection of supply concepts.

ecological rating, supply concepts, green logistics

The production ramp-up is often a critical period for manufacturing companies. It is essential to prepare an efficient plan and to monitor consistently the abidance of this plan. With a maturity level model and key figures the quality of a ramp-up can be described. Therefore, the values of the key figures are categorized into maturity levels. By different aggregation levels a target-actual comparison can be made based on one key performance indicator.

production ramp-up, maturity model, aggregation logic, ramp-up management

The production ramp-up is often a critical period for manufacturing companies. With a developed method for planning and monitoring of production ramp-ups at new locations this critical period becomes manageable. The method consists of reference processes, key figures and reactions. By different aggregation levels a target-actual comparison can be made to identify appropriate reactions.

production ramp-up, maturity model, aggregation logic, ramp-up management

By leveraging the production factor "human" it is possible by taking into account human performance fluctuations during the day to reduce product-related defect costs and increase quality. To this end, the integration of human performance variations in methods of production planning and control must be carried out. This article introduces a method by which a quality-oriented job shop schedule can be created, taking into account human performance fluctuations.

produktion planning, job shop scheduling, human performance fluctuation, optimization problem

The assembly of complex, large-scale products is often characterized by poor date availability, limited process standardization, frequent product modifications and flexible usage of resources, which often leads to interruptions in the assembling process. Therefore, in a research project between the IPH Hannover and the WZL of RWTH Aachen University, a methodology for assembly processes is developed which allows the identification and evaluation of process alternatives in case of interruptions. For the evaluation of those process alternatives logistical objectives are used.

xxl-product, adaptive assembly scheduling, interruption assembly process, logistical objectives

The production ramp-up is often a critical period for manufacturing companies. It is essential to prepare an efficient plan and to monitor consistently the abidance of this plan. Generally processes and activities can be monitored with key performance indicators. This article describes an approach to identificate key performance indicators for the monitoring of additional production capacities at new locations.

production ramp-up, maturity model, aggregation logic, ramp-up management

When designing delivery concepts, companies often have a choice between different alternatives. The decision between these alternatives is no longer made only on their costs and logistical efficiency. Rather the ecological compatibility of the processes is more and more considered. This paper introduces ways to integrate environmental sustainability into decision-making.

ecological evaluation, delivery concepts, green logistics

The energy costs‘s share in the total is increasing in producing companies. Due to variations in the energy consumption over the day, arising power peaks lead to high energy costs. Power peaks could be reduced by load management systems. But these systems could have a negative impact on logistic performance figures. A simultaneous optimization of logistic performance figures and the energy consumption is not available yet. In this article a method for the energy cost-based production scheduling is presented. This method schedules jobs on machines in a way that the energy consumption is equalized and the logistic performance (makespan, stock, job delays, workload) is ensured.

energy costs, power peaks, production scheduling

The energy costs‘s share in the total is increasing in producing companies. Due to variations in the energy consumption over the day, arising power peaks lead to high energy costs. Power peaks could be reduced by load management systems. But these systems could have a negative impact on logistic performance figures. A simultaneous optimization of logistic performance figures and the energy consumption is not available yet. In this article a method for the energy cost-based production scheduling is presented. This method schedules jobs on machines in a way that the energy consumption is equalized and the logistic performance (makespan, stock, job delays, workload) is ensured.

energy costs, power peaks, production scheduling

The energy costs‘s share in the total is increasing in producing companies. Due to variations in the energy consumption over the day, arising power peaks lead to high energy costs. Power peaks could be reduced by load management systems. But these systems could have a negative impact on logistic performance figures. A simultaneous optimization of logistic performance figures and the energy consumption is not available yet. In this article a method for the energy cost-based production scheduling is presented. This method schedules jobs on machines in a way that the energy consumption is equalized and the logistic performance (makespan, stock, job delays, workload) is ensured.

energy costs, power peaks, production scheduling

In 2022 germanys last nuclear power plants will be shut down. In addition to the decision to phase out nuclear power a worldwide shortage of fossil fuels will lead to a steady rise in energy costs. Therefore the IPH develops procedures and methods, which will help companies to reduce their energy costs.

energy costs, occupancy plan, energy consumption

Research projects