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Dear all, I have tons of CANBUS logs that I have to analyse with Matlab. I have chosen Matlab since I can automate the post-processing. Unfortunately, Matlab seems to have a few limitations in the messages it can import so, in some cases, I have to use another SW for exporting .ASC/.BLF file...

Hi all, I have logged a huge quantity of CANBUS files. The files are stored in .ASC file format, which I have to analyse with MATLab. Is there any "programmatic" way that permits me to interpret (with the .DBC files) and convert the .ASC files into a file format that can be open with MATLab...

Hi all, I am aware that idling is fuel inefficient and a waste of fuel, but I guess that it is not always convenient to turn the engine off, since the turning on requires more energy than idling. So, I think that for long periods, turning the engine off is more fuel efficient than idling, but...

Hi all, I am analysing fuel consumption data got from the CAN-Bus and available into SAE J1939 database. Does anyone have any reference material about its calculation? I have not found that much. The most detailed document I have found is the following, where it is stated: "Fuel rate is based...

Hi all, In our lab, a little engine test-bed is available and we also run full vehicle traction test on our tracks. Our plan is to increase the type of activities we can carry out, so I am thinking to buy another test-rig. I am considering two options: - chassis dynamometer: to run traction...

Hi all, I'm analyzing the stability of a slope with SSAP. My colleague provided me the soil shear strength data of the site and the slope is rather stable for the long-term analysis (i.e. using c'-phi') but not for the short-term analysis. (i.e. using cu). The reason is the slope is long and...

Hi all, I'm in doubt with the calculation of the sliding resistance (Ps) of gravity walls where the base is under the ground leve.. In few documents, it is stated the "Sliding of a retaining wall is resisted by the friction between the soil and the base" (From Peck and Terzaghi)...

Hi all, Today I helped a coworker in doing some tests of a system he designed that is able to measure the size of big objects. For example, the tickness of walls. This brought me to think if there is anything similar which cam be used to monitor the wear of tools of cutting machines, so that...

Hi all, I'm trying to design a durability test for a stepped transmission of an off-road vehicle. The maximum engine speed is 3000rpm. Our customer provided some field data collected for years and he asked to define a method to design a durability test for the transmission in function of...

Hi all, I have this core sampler and I'm a bit concerned about how to properly use IT for the evaluation of the soil bulk density. One of the two edges is sharp (cutting edge) and half inch below it and in the inner side, there is a mark (indicated in the picture in yellow). The mark is 5cm far...

Hi all, I want to try to evaluate soil compaction due machine traffic on agricultural soil. I'm interested in shallow soil (less than 30cm) and I need an in-situ test. In addiction to soil bulk density and cone index, I'm considering to measure the soil infiltration rate through the double...

Hi all, For my PhD dissertation, I've built a matlab tool which allowed me to make durability analysis of road load data for drivelines (mechanical and hydromechanical) . Especially, from torque, rpm and gear usage data, in function of the transmission layout, it computes the load of each...

Hi all, I'm designing a gabbion wall for retaining a slope of 25° while the soil friction angle is only 20°. I need to calculate the lateral earth pressure coefficients and I have always adopted the Coulomb's formula, like the following for the active state...

Hi all, I'm just reviewing on a book few concepts of effective stress. I know that the Mohr's cicle in terms of effective stress has the same radius of the one in terms of total stress, but it is translated due to the pore water pressure, as you can see in the next figure, that is for a...

Hi all, today I tried to determine the plastic limit of an agricultural soil and it was not possible, the thread slipped over the glass plate rather than roll. It was the first time to me that an agricultural soil is non plastic. Is it common? I read that a sandy soil has this kind of...

Hi all, Why axle wind up is of big corcern for drivelines? May it be damaged by the wind up? Thanks cheers Pietro

Hi all, I have recorded torque and rpm of the crank shaft during some conditions. I need to understand which conditions is more "damaging" for the main clutch, for example many engangement with low torque and low rpm or few engagements with high torque and high speed levels. For the gears I...

Hi all, I need to calculate the damage from a measured torque acting upon a shaft. The shaft is installed on a vehicle. May I use the time at level for getting the load spectra which I use to calculate the damage? n thanks

Hi all, How to set the loads that are within or on the building? Is there any standard or regulation with a list of the foundation design load according to the building type? Thanks

Hi all, I read on booke the at rest condition should be applied in case of deep foundations. When is a wall foundation considered deep? Is there any rule of thumb? Thanks