Effect of TIG-dressing on fatigue strength and weld toe geometry of butt welded connections in high strength steel

When high strength steels are applicated in dynamically loaded structures, fatigue problems can arise. In most current design codes, the fatigue strength of high strength steels is either not discussed or determined as similar to mild steels. This assumption can be related to the dominance of the crack propagation life during in the total...

Achieving excellence in the aerospace industry: The development of a quality improvement method for innovative engineer-to-order processes at Fokker Services

On 3D Stacked IC Yield Improvement and 3D-DfT Test Architecture

Three-dimensional stacked ICs (3D-SICs) based on Through-Silicon Vias (TSVs) is an emerging technology. It provides heterogeneous integration, higher performance and bandwidth, and lower power consumption. However, 3D-SICs suffer from lower compound yield, especially those based on Wafer-to-Wafer (W2W) stacking. In addition, testability of such...

Retail Performance Scan+: An innovative service for improving the commercial performances in retail

Integration of Six Sigma and Achieving Competitive Excellence: A case study at Ethiopian Airlines

Currently organizations are investing large sums of money, time and knowledge to stay competitive and profitable. Driven by strong competition and increasing operational costs, the global aviation industry is under paramount pressure to strengthen operational excellence and improve profitability. Airlines are heavily investing in the means to...

Measure, understand and improve cities: Visualizing pedestrian flows to improve inner-city quality in Delft using GPS-tracking technology

We all have walked on a street when suddenly someone comes over to you asking for directions. Sometimes, people do not know where they are and they do not know how to reach their destination. They are lost. However, people should not depend on others to find their way. The urban fabric should be legible enough to find one’s way. The problem...

The effect of filter jacket clogging on the performance of prefabricated vertical drains in soft soils

Prefabricated vertical drains (PVD) are used to accelerate drainage and consolidation of soft sediment. An effective functioning of these PVD depends on its capacity to drain water from the subsurface. Among other causes, the clogging of filter jackets is thought to be of a considerable negative influence on the functioning of PVD. Current...

The Effect of Porefill on Pre- and Post-stack Seismic Data in a Dutch Buntsandstein Reservoir

Wintershall is operating a number of Buntsandstein fields in the Southern North Sea. It has proven a major exploration challenge in the area to predict the reservoir quality of these fields based on seismic data only. The effect of salt present in the area plugging the pore space leads at first sight to similar seismic responses on post-stack...

Jetgrouten, precisie met geweld

Jetgroutkolommen worden gevormd door onder hoge druk een groutmengsel in de grond te injecteren. De grond wordt versneden, losgewoeld en vermengd met de gernjecteerde vloeistof. Door de boorbuis roterend te trekken ontstaat een cilindervormig element. Afbankelijk van het gekozen systeem geschiedt het snijden met dezelfde of met een andere straal...