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Found 4 essays matching the above criteria.

  1. 1. Material characterization of long-term stress relaxation in a semi-crystalline polymer material : An experimental and numerical study

    University essay from Blekinge Tekniska Högskola

    Author : Jakob Görtz; [2021]
    Keywords : Abaqus; MCalibration; PRF; HDPE; Stress relaxation; Long-term testing; Theoretical expressions; Material calibration;

    Abstract : As the plastic and packaging industry is looking to increase the longevity of plastic products as well as recycling used material, there is a need to understand how material properties respond and change during long periods of mechanical loading. Physical tensile experiments on thin plant-based High-Density Polyethylene (HDPE) are conducted with the intent of capturing relaxation behavior from a short-term (1-3 hours) and long-term (29-56 days) perspective. READ MORE

  3. 2. Evaluation of Tracking Filters for Tracking of Manoeuvring Targets

    University essay from Linköpings universitet/Reglerteknik

    Author : Ludvig Junler; [2020]
    Keywords : Interacting multiple model; Kalman filter; Target tracking;

    Abstract : This thesis evaluates different solutions to the target tracking problem with the use of airborne radar measurements. The purpose of this report is to present and compare options that can improve the tracking performance when the target is performing various manoeuvres while the radar measurements are noisy. READ MORE

  4. 3. Absence of Motor Coactivation in Bimodal Divided Attention: Two Case Studies

    University essay from Lunds universitet/Institutionen för psykologi

    Author : Robert Johansson; [2020]
    Keywords : Bimodal Attention; Response Force; Systems Factorial Technology; Social Sciences;

    Abstract : When attention is divided across vision and hearing, participants typically respond faster when a visual and an auditory target are presented together as compared to when only one of the visual or auditory targets is presented alone. Coactive models of divided attention account for this so-called bimodal advantage by positing a brain architecture whereby the neural activity inspired independently by concurrently presented auditory and visual targets is first processed in parallel and then pooled into a common resource. READ MORE

  5. 4. Assessment of Ultrasound Field Properties and the Potential Effects on Cells

    University essay from KTH/Medicinsk teknik

    Author : Zhongze Chen; [2013]
    Keywords : ;

    Abstract : Ultrasound is regarded a convenient and safe tool to acquire diagnostic information that we need for clinical use. For a long time ultrasound has been counted as a harmless method, but after all, there is a heating and a me-chanical impact by ultrasound exposure. This influence can reveal both positive (e.g. READ MORE