Read the abstract, see who wrote it and who cites it, and get the citation in APA, MLA, Chicago or Harvard.
About 6,016 papers for “Dynamic load testing”
Seitz, J.M., Klingmueller, O., Bilfinger und Berger Bauaktiengesellschaft, Mannheim (Germany) · OpenGrey (Institut de l'Information Scientifique et Technique) · 1987
Copy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische Informationsbibliothek
Cited by 0
Olivier Burdet, Stéphane Corthay · E-Periodica · 1995
Keywords: natural frequency ; coefficient dynamique ; decrement logarithmique ; dynamic coefficient ; logarithmic decrement ; frequence propre ; dynamic test ; essai dynamique Reference EPFL-CONF-111619 URL: http://is-beton.epfl.ch//Publications/199x/Burdet95.pdf Record created on 2007-09-12, modified on 2016-08-08
Cited by 8Open access
P. Middendorp, R.J. van Foeken · TNO Repository · 1998
Pile capacity testing by high strain dynamic loading methods is widely applied because of its economy and efficiency compared to static load testing methods (SLT). Fre-quently applied dynamic loading methods are dynamic load testing (DLT) and statnamic testing (STN). The paper will deal with the very often raised question in practice: When to apply DLT and STN when pile type and soil conditions are known. Special attention is given to DLT on cast in situ piles, and complicating factors like limited knowledge of concrete material proper-ties and pile shape. The suitability of DLT and STN is discussed for cast in situ piles and driven precast piles by the evaluation of the accuracy, reliability, economy, mobilization of capacity and the chance on pile damage
Cited by 4
2013
Cited by 1Open access
SM Byrne · 1976
The paper describes a series of tests carried out to determine the effect of certain factors on the load-carrying capacity of sheet-metal roofing systems subjected to repeated loading. The factors examined include construction factors such as fastener tightness, and design factors such as purlin thickness. It is found that all the factors affect the strength of the roof system. Safe working loads are given for certain combinations of the factors. Tests are restricted to a corrugated steel sheeting fastened to steel Z-section purlins with self-drilling self-tapping screws.
Cited by 1
Matko Medak, Jure Radić, Anto Kučer et al. · 2007
The Bukovo viaduct is a part of the national road D-8, section Orehovica – St. Kuzam. The viaduct superstructure is a pre-stressed concrete continuous beam cast in situ over five spans (32.0 + 3 x 40.0 + 28.0 m). The cross section of the beam is a one cell box with the cantilevers. The superstructure height is 250 cm and the superstructure width is 1186 cm. The exception is the fifth span where the superstructure width is increasing from 1186 cm at the beginning up to 1493 cm at the end. The upper deck thickness varies from 25 cm at the ends of the cantilevers and in the middle of the box to 40 cm above the webs. The 260 cm long cantilevers overhang from both sides of the upper deck of the box girder. The webs are angled 5:1 and 45 cm thick. The bottom plate of the box girder is 582 cm wide and 20 cm thick. At the connection to the web, thickness of the bottom plate is 30 cm. The transversal beams above the pears and above the abutments are used to additionally strengthen the box girder. The viaduct superstructure rests on the pot bearings placed on the top of the pear and the abutment caps. These caps are constructed of high quality mortar. The fifth span was additionally strengthened due to realized lower quality of concrete. The specifications were not met for the bottom plate and the webs. One heavy truck driving across the viaduct at various speeds to obtain the dynamic responses of the viaduct superstructure at desired frequencies presented the dynamic excitation of the viaduct. Experimental results were analyzed and compared with results obtained from the finite element model of the viaduct.
Cited by 0
Kekoni, Joonas · Aaltodoc (Aalto University) · 2020
Liikenteen määrän kasvu on johtanut kasvavaan ruuhkautumiseen kaikkialla teollistuneessa maailmassa. \n\nPerinteiset tavat ratkaista ruuhkautumista ovat olleet joukkoliikenne ja sopimuspohjainen kimppakyyti. \nEsikaupungistuminen on siirtänyt merkittävän osan liikenteestä keskuksiin nähden säteittäisestä poikittaiseksi, mikä tekee joukkoliikenteen järjestämisen jatkuvasti hankalammaksi. \nPerinteistä sopimuspohjaista kimppakyytiä taas haittaa liukuvien ja muuttuvien työaikojen yleistyminen. \n\nUutena ratkaisuna ruuhkautumiseen tässä projektissa tuodaan dynaaminen kimppakyyti, eli tietotekninen järjestelmä, jossa kimppakyytien tarjoajat ja tarvitsijat voidaan saattaa yhteen. \nJärjestelmää käytetään matkapuhelimissa toimivilla ohjelmilla. \n\nTässä projektissa tehty järjestelmä tulee Alankomaihin Schipholin lentokentän ja yrityspuiston käyttöön työmatkojen yhdistämiseen. \nJärjestelmällä yhdistellään vain työmatkoja, sillä ne ovat ruuhkautumisen merkittävä aiheuttaja ja niissä auton matkustajamäärä on tyypillisesti alhaisin. \n\nTässä työssä tutkitaan rakennetun ohjelmiston soveltuvuutta kohdejärjestelmän lisäksi tätä suurempiin kimppakyytijärjestelmiin kuormitustestauksella. \n\nKun toimivuus ja kuormittuvuusongelmia oli korjattu, testattava järjestelmä soveltuu hyvin projektin kohteena olevaan järjestelmän tarvitsemaan 1000 päivittäiseen matkaan. \nTämän lisäksi ohjelmisto soveltuu välttävästi keskisuuren keskuksen eli 5000 päivittäisen käyttäjän kimppakyytien yhdistelystä. \nTätä suuremmat järjestelmät vaativat joko ohjelmiston nopeuttamista tai kohteena olevan keskuksen kimppakyytitarpeiden toteuttamista usealla alueellisella järjestelmällä.
Cited by 0
Gerald Verbeek, David Tara, P. Middendorp · IFCEE 2015 · 2015
Dynamic Load Testing (or High Strain Dynamic Testing as the test is called in the ASTM Standard D4945) is widely considered as a reliable method to determine the capacity of deep foundation elements. To illustrate the reliability of this test method, comparisons between the outcome of a Dynamic Load Test and a Static Load Test on the same pile are often used in the literature, which seem to confirm that the outcome of a Dynamic Load Test can accurately predict the capacity. However, these illustrations generally ignore the subjective aspect of the test result interpretation because, when this aspect is included, a completely different view on the method’s reliability emerges. This paper will use the results of the various international prediction events to illustrate this aspect, which will clearly demonstrate that the reliability of this test method should be reassessed where it has not been adequately validated by adequate site characterization and static load testing. The paper will finally address the impact of this reassessment on the resistance factors that have been derived solely from Dynamic Load Test results.
Cited by 6
Anderstedt, Hampus, Wifvesson, Madeleine · Lund University Publications Student Papers (Lund University) · 2025
Ensuring performance and reliability is critical for any modern web application.Continuous performance measurement and evaluation are necessary to detect anomalies, adapt to evolving demands, and prevent degradation before it affects users.In this work, the design and evaluation of a benchmarking framework for assessing the performance of a dynamic web-based Customer Relationship Management (CRM) system developed by Lime Technologies AB are presented.The primary goal was to establish whether the Key Performance Indicators (KPIs): throughput, response time, concurrency, and error rate could be measured in this study's benchmark setup.A combination of tools was deployed: Locust to simulate server requests such as GET and POST and Playwright to simulate interactions on a webpage.Although Locust provided efficient, scalable backend testing, it lacked support for complex front-end workflows.In contrast, Playwright enabled realistic simulation of user behaviour, and, in combination with Artillery for supplementary metrics, offered scalable endto-end testing.The benchmarking framework was validated across two different deployment environments, revealing the impact of infrastructure components on system performance.Challenges such as rate-limiting, race conditions, and tool compatibility are discussed.The study concludes that full browser-based testing, despite its resource cost, offers the most representative assessment of user experience on dynamic CRM platforms.
Cited by 0Open access
S. Roodink · 2017
“Large-range active load for dynamic motor testing” Before electro motors can be used in robots, the parameters of the motors should be known. This can be done by using the data sheet of the manufacture, but this is not always sufficient enough. So the best way to get to know the parameters is by testing the motor. The test setup should be designed and build in a proper way, so that the useful parameters can determined. Like, maximal speed, maximal torque, maximal temperature and a torque-speed curve. The setup is split in three parts, the electro motor, sensors and a load. The sensors and load will be my BSc assignment. The load will an electromotor, which can easily be changed for a different one, so many electro motors can be tested, without and with a gearbox, high and low RPM. The whole load motor will be kept in place by bearings and will be attached to a load cell, thereby the torque of the MUT (motor under test) can be calculated. The active load and sensors have to work in this range.
Cited by 0
W.M.G. Courage, R.J. van Foeken · TNO Repository · 1996
so-called direct and indirect methods. The direct methods (CASE method, TNO method) yield straight forward real time results. The more accurate indirect methods (CAPWAP, TNOWAVE) require signal matching. As a result the load displacement diagram is obtained and the bearing capacity can be predicted. The interpretation with the indirect methods is much more reliable than those with the direct methods [2,4,6]. However, Signal Matching is much more time consuming and requires an experienced engineer to operate. The stress wave package TNOWAVE for performing Signal Matching has been extended with a search strategy to find the best fit between calculated and measured signals. The program for automatic Signal Matching is not replacing the engineer, but it will support him to perform the matching easier and especially faster. The automatic Signal Matching method is demonstrated for a interpretation of a Dynamic Load Test on a steel pile of 75 meter, using a hydraulic hamroer.
Cited by 2
Dhillon, Parveen, Kim, Dohyeon, Horton, W. Travis et al. · Purdue e-Pubs (Purdue University System) · 2024
Cited by 0
2016
Cited by 0
Hugo Heyman · KTH Publication Database DiVA (KTH Royal Institute of Technology) · 2013
Load testing has become an increasingly important matter in today's web applications. Upon releases of popular applications its users can create massive load potentially making an application unreachable. The scope of this thesis was to investigate as well as further develop an open source load testing framework: Locust. Locust aims to help creating as authentic simulated user behavior as possible. This allows an application's user-load threshold to be measured by the number of users and not just "requests per second" as most other load testing tools do. A challenge in implementing allocation of user-load during runtime of a test was to make code fit to the distributed architecture that Locust supports. By having a distributed architecture, a Locust test can be scaled up to simulate millions of simultaneous users. Two libraries essential to Locust: Greenlet and Gevent are studied in this thesis. These libraries make in-process concurrency possible by providing an API for running code in coroutines also known as "micro-threads". Another ambition during this thesis was to implement a feature allowing an automatic algorithm to find the application threshold by ramping up the number of simulated users. The implementation and results are presented in this thesis.
Cited by 1Open access
M.Matsumoto, K, Fujita, O.Kusakabe et al. · Tokyo Tech Research Repository (Tokyo Institute of Technology) · 2006
Cited by 0
Michael A. Conrad · Digital WPI · 2007
The purpose of this project is to design a dynamic load able to dissipate 12kW at a maximum voltage of 300V and a maximum current of 300A. Such a load is expected to have a flat frequency response in the range of 0 to 10,000Hz. The load is meant for testing fuel cells and generators for military applications. A reduced scale model was built and evaluated.
Cited by 0
Jorge W. Beim · 2004
Dynamic Load Testing of foundation piles was introduced in Brazil as early as 1981, to fulfill the need of the oil industry for quality control of offshore piles. Dynamic tests were first used on land projects in 1983. Since that time, thousands of piles have been tested using this technique. Local peculiarities like less conservative failure criterions and the prevalent use of restrike tests using drop hammers led to the generalized use of methods based on the application of blows with increasing energy. Theoretical studies of the behavior of piles subjected to blows with increasing energy were made and published by Brazilian engineers. Specific interpretation methods were developed, like the use of graphs relating RMX (Case Method Capacity) with DMX (maximum displacement during the corresponding blow). This paper describes how dynamic load tests with increasing energy are executed, and discusses its use for testing both driven and cast-in-situ piles. Examples are shown to illustrate the various conclusions that can be reached by using those methods.
Cited by 0
Boris A. Vyskubenko, Vitaly Koksharov, L. E. Kolegov et al. · Atomic Energy · 1991
Cited by 2
Vincent Carl S. Cuajao · International Journal of Geomate · 2024
Cited by 5Open access
Ahmad A. Darrag · 1987
Residual stresses accumulating during pile driving have a very important effect on the pile capacity prediction and the interpretation of static load test results. The report examines this phenomenon in detail, including all the factors involved and the methods that have been suggested thus far for the residual stresses prediction. A new method has been developed for the prediction of such stresses. This method, in addition to being relatively simple, proved to give predictions that compare well with actual measurements.
Cited by 0Open access