can-structural-health-monitoring-prevent-bridge-collapse

Can bridge collapses be prevented by continuous structural monitoring?

Wikipedia list of bridge failures features 110 entries from year 2000 onwards, including several high-profile ones like the Genoa viaduct disaster. The recent accident again prompts the question: how could it happen in 21st century with the present bridge structural monitoring abilities of the industry? Bridge building has been evolving for thousands of years, with the oldest parts of bridges …

Polcevera viaduct: a premature end of a milestone of the Italian engineering heritage

By F. Marzullo, G. Sforza Following the collapse of the stack n°9 of the viaduct on the Polcevera, which caused a huge disaster on august 14th2018, we want to elaborate on the situation surrounding an artifact of great engineering importance that only now, albeit in a terrible way, has reached an enormous reputation. After a technical description, addressed above all to …

Single board computer power consumption and heatsink temperature

Power consumption is a very important characteristic of single-board computers (Raspberry Pi, Latte Panda) since they are oftenly powered off batteries in mobile applications. MonoDAQ-U-X data acquisition device allows precise measurement of voltage and current while the data is displayed in user-friendly DEWESoft software. Additionaly also the temperature can be monitored to analyze the relation between the CPU load, power …

monodaq dewesoft fft

Measurement basics – signal to noise ratio

Let’s look at how to measure signal to noise ratio of a signal with MonoDAQ-U-X hardware and DEWESoft software. Signal to noise ratio is a value that tells us the ratio between the meaningful information in a signal and the noise  that is obscuring this information. Technically it is expressed in the ratio of the signal power to the noise …

test chamber automation

Automating a vacuuming chamber with MonoDAQ

MonoDAQ EtherCAT modules are used to drive valves and measure pressure in a test chamber to control the vacuuming process from DEWESoft Sequencer. The air is pumped out of the vacuuming chamber by a rotary pump. Two valves control the input and output flow of the air. The pump and the valves are controlled by the MonoDAQ 4xDO EtherCAT digital …

yankee gearbox paper mill iepe accelerometer amplifier

Monitoring Yankee gearbox for tissue paper machine

The presented application is one of the standard monitoring services performed by ISE srl in the field of Tissue paper industry. ISE srl is an Italian company operating in the field of Reliability, Maintenance Consulting, PdM and Condition Monitoring. The activity is focused on monitoring the Yankee gearbox for Tissue paper machine (Figure 1). The activity consists in monitoring the …

pressure measurement synchronized ethercat

Synchronized pressure measurement in industrial piping system

MonoDAQ 1xACC EtherCAT measurement modules are often used in pressure measurement applications on large industrial piping systems. High pressure piping requires precise absolute pressure measurement as well as the ability to record fast transients. Peaks in pipe pressure can ultimately cause valve or joint failures, therefore the pressure needs to be closely monitored. The biggest challenge of such a measurement …

$2 smartphone accelerometer vs. high-end IEPE vibration measurement

I’ve been working in test & measurement industry for a few years now and people often ask me why we sell data acquisition systems at 1000+ USD per measurement channel when a regular smartphone includes an accelerometer that you can buy online for $2. Here’s why. Take Google Pixel that’s been in my pocket for the last 12 months. Inside …

monodaq iepe accelerometer amplifier

Straightness measurement on the fly at a steel production line

Due to residual stress from hot rolling the straightness of longitudinally shaped products is often a problem in steel and aluminium manufacturing. MonoDAQ-SM straightness measurement system accurately measures straightness (flatness) of steel bars in two axes. Straightness measurement is done on the fly during the production process of cutting the rectangular steel bars. During the measurement the bars are also …