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Summary of Contents for Rincent Minidyn V9
- Page 1 Rincent Minidyn LightWeigth Deflectometer User manual Version 9 : Junary 2021 Rincent ND Technologies 4 bis rue du bois briard 91080 Courcouronnes Tél. : 09 72 32 45 98 E-mail : rincent-ndt@rincent.fr SARL au capital de 300 000 euros n° de SIREN 431 715 689...
- Page 2 Rincent ND Technologies Minidyn User Manual Page 2...
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Page 3: Table Of Contents
3.3.1 Modulus tab ........................26 3.3.2 Acquisition configuration ....................26 Data managements ....................... 27 Project and report ......................... 28 3.5.1 Project ..........................28 3.5.2 Report ..........................28 Make measurements ......................29 3.6.1 Test measurements ......................29 Rincent ND Technologies Minidyn User Manual Page 3... - Page 4 3.6.2 Project and report selection....................29 3.6.3 Make a measurement ......................29 Exportation ..........................30 Warranty ........................31 Rincent ND Technologies Minidyn User Manual Page 4...
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Page 5: Minidyn Description
Versions 2 and 3 improve the ergonomic and aesthetic of the Minidyn. The use of the Minidyn both software and hardware are the same regardless of the version. Performances and results are also the same. Rincent ND Technologies Minidyn User Manual Page 5... - Page 6 Sending an email containing the data. Connecting the smartphone to a computer using USB cable. The following options are available: Extension of the measurement range to 120 MPa : 200mm rod extension Rincent ND Technologies Minidyn User Manual Page 6...
- Page 7 Assembling the Minidyn is done by sliding the rod at the top of the plate and securing both using and the safety pin. Figure 3 : Assembling the Minidyn using the safety pin. Rincent ND Technologies Minidyn User Manual Page 7...
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Page 8: Specifications
Battery powered Power USB charger (5 V, 0.5 A) Data transfer USB or Bluetooth Autonomy 30 h on standby 5 h on measurement Automatic shutdown after 15 min Tableau 1: Minidyn hardware specification. Rincent ND Technologies Minidyn User Manual Page 8... - Page 9 Direct transfer using USB > 100 000 measures Storage capacity Minidyn Android Software installed Acquisition et review Functions Connection Bluetooth Stiffness method Boussinesq, Linear et Exponential Correlation method Tableau 2: Minidyn software specification. Rincent ND Technologies Minidyn User Manual Page 9...
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Page 10: Transport
Since version 2, the Minidyn can be transported in one piece using the handle at the base of the plate. Drop weight swap You can easily change drop weight by unscrewing the top handle. Figure 5 : Top handle removal. Rincent ND Technologies Minidyn User Manual Page 10... -
Page 11: Acquisition Case
The case comprises of: A power-on and power-off button with: Blue led for Minidyn status. Red led for battery status. USB port type B for charging and data transfer. Bluetooth antenna (integrated since version 2). Rincent ND Technologies Minidyn User Manual Page 11... -
Page 12: Power-On And Power-Off
Slow blink: Le Minidyn is connected to an acquisition software. Always on: The Minidyn is in measurement mode and wait for a drop. Fast blink: The Minidyn is sending measurement data over Bluetooth. Rincent ND Technologies Minidyn User Manual Page 12... -
Page 13: Charge
Slow blink: The battery is low. The Minidyn will shut down in about 15 to 30 minutes. Fast blink: La battery is depleted. During charging: Slow blink: Charging in progress. Led off: The charge is done. Rincent ND Technologies Minidyn User Manual Page 13... -
Page 14: Measurement
Put the palm of one hand on the upper handle while moving up the weigth with the other hand. Drop the weight when it is at maximum height. Start again as needed to make one point (3 by default). Rincent ND Technologies Minidyn User Manual Page 14... - Page 15 Do not make two measurements at the same spot. The first measurement will compact the ground and the second measurement will have a higher modulus than reality. Drop the weight at the maximum height possible to have the higher load in the ground. Rincent ND Technologies Minidyn User Manual Page 15...
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Page 16: Precaution Of Use
USB connector is not when the protective rubber cap is not present. It is recommended to not use the Minidyn under heavy rain. In any case measurement in water soaked ground are not representative of the modulus. Rincent ND Technologies Minidyn User Manual Page 16... -
Page 17: Modulus Calculation
The first treatment is to use Boussinesq formulae to obtain E modulus that is described, for example, in the ZTVE-STB-94 standard. The last step is a correlation step that convert E in equivalent modulus E or E DYN2 Rincent ND Technologies Minidyn User Manual Page 17... -
Page 18: Stiffness Calculus Algorithms
The ground is modeled as a system comprising a weight m a spring k and a damping c. An inversion algorithm is used to retrieve m, c, k parameters and removing the bias from the weight and damping. Rincent ND Technologies Minidyn User Manual Page 18... - Page 19 A 100% quality index correspond to a perfect superposition between simulation and measurement data. A measurement is considered good enough when its quality index is above 50%. A very good measurement have a quality index above 90%. Rincent ND Technologies Minidyn User Manual Page 19...
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Page 20: Method Comparison
All this parameter, except K that is previously calculated, are modifiable in the Minidyn software in the configuration panels. Rincent ND Technologies Minidyn User Manual Page 20... -
Page 21: Correlation Algorithms
Figure 15 : Correlation test between E and E The linear correlation is often used in large platform or road site where material and thickness does not change. Rincent ND Technologies Minidyn User Manual Page 21... -
Page 22: Exponential Correlation
(NFP 94-117-2 standard). The details of the correlation and the algorithm to obtain k and parameters are explained in the following reference: C. Asli, Z. Feng,G. Porcher,JJ Rincent, Homogenous elastic modulus back-calculation from Portable Falling Weight Deflectometer: correlation study, Laboratoire de Mécanique et Energétique d’Evry, Entretiens du RGCU 2011. -
Page 23: Minidyn Software For Android
Go to parameter and connections tab. Activate Bluetooth and after a long push, go the Bluetooth configuration. “Rincent Minidyn BT” peripheral should appear in the list. Tick the case “Code PIN contains letters of symbols”. Pair the device using the code below. -
Page 24: Fist Launch
Figure 17 : Pairing the Minidyn. 3.1.3 Fist launch At first launch, it is recommended to change: Default operator name. Modulus calculation parameters. These actions are described in the configuration tab described below. Rincent ND Technologies Minidyn User Manual Page 24... -
Page 25: Main Interface
Setting are change using the “Setting” button. If a project is already loaded, a windows will pop-up to choose between default configuration that will be used for futures projects and the configuration of the project. Rincent ND Technologies Minidyn User Manual Page 25... -
Page 26: Modulus Tab
Set-up drop to ensure a good contact of the plate on the ground. Measurements drop that calculated modulus are averaged. Parameter Default value Set-up drops Measurement drops Tableau 5: Default values for the number of drop per point. Rincent ND Technologies Minidyn User Manual Page 26... -
Page 27: Data Managements
The number of measurement that can be saved depend of the memory capacity of your device. But considering modern smartphone, you will need more than 100 000 drop to saturate the memory capacity. Rincent ND Technologies Minidyn User Manual Page 27... -
Page 28: Project And Report
“Report” tabs. Only the name of the reports is mandatory but it is recommended to fill the platform information (type…) for future reference. Figure 21 : Report tabs. Rincent ND Technologies Minidyn User Manual Page 28... -
Page 29: Make Measurements
One in acquisition, you can make as many drop you want. Each group of drop (3 by defaults) will be used to make a new point. Each time a new points is created, the modulus is calculated and displayed Figure 22 : Acquisition, before (left), during (middle), after (right). Rincent ND Technologies Minidyn User Manual Page 29... -
Page 30: Exportation
If you choose an email export, the software will ask you witch email program to use. If you choose a file export, the file will be exported in your SD card memory under the directory Minidyn. Figure 23 : Export d'un dossier. Rincent ND Technologies Minidyn User Manual Page 30... -
Page 31: Warranty
Degradations caused by an improper storage. In general every damages resulting from excessive mechanical or environmental stresses. Every repair, modification or opening the instrument without written consent of Rincent ND Technologies are prohibited and will void the warranty. Rincent ND Technologies...
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