BCTF-50 — Backlit Calibration Target Fixture

The BCTF-50 — Designed for glass calibration targets

 

BCTF-50 Tech­ni­cal Features

  • Bat­te­ry powe­red back­light illumination
  • 6h run time / 1h char­ge via Micro USB
  • Adap­ter for micro­scope targets
  • Rota­tio­nal axis for til­ting in grid centre
  • Shif­ting via x‑y-z stage
  • Ten­si­le tes­ting machi­ne clamp adapter
  • Tar­get exchan­ge via clip fixture
  • For max. tar­get size of 50 x 50 mm
  • avail­ab­le with dif­fe­rent clam­ping adap­ters for flat or round spe­ci­mens (see below)

 

 

            

 

For fur­ther infor­ma­ti­on, a quo­ta­ti­on or in case of any ques­ti­ons, plea­se don’t hesi­ta­te to con­ta­ct us via info@isi-sys.com

Speckle Pattern Application Kit

The Speckle Pattern Application Kit for the easy and fast production of a perfect speckle pattern for your DIC application!

The cor­re­la­ted solu­ti­ons speck­le com­pon­ents pro­vi­de the pro­duc­tion of ide­al speck­le pat­tern which is important for good signa­tures throughout the area of inte­rest so that con­sis­tent sized sub­sets may be tra­cked with certainty

 

 

Characteristics and advantages:

  • High con­trast, quick pre­pa­ra­ti­on
  • Pre­cisi­on: Opti­mi­sed and con­sis­tent dot sizes
  • 50 % coverage: equal amount of black and white
  • Ran­dom: Per­fect mix­tu­re bet­ween irre­gu­lar and regu­lar pattern
  • Result: impro­ved hig­her spa­ti­al reso­lu­ti­on due to opti­mi­sed sub­set size and high­ly redu­ced noise

 

Why a good speck­le pat­ter is required?

In DIC, a mesh of small sub­sets of the image are tra­cked as the spe­ci­men moves and deforms. To per­form this tracking, the sub­sets are shifted until the pat­tern in the defor­med image matches the refe­rence image as clo­se­ly as pos­si­ble; this match is cal­cu­la­ted by the total dif­fe­rence in grey levels at each point. A good pat­tern will allow the cor­re­la­ti­on to be made with high con­fi­dence and pro­du­ce low noi­se. The examp­le below shows the uncer­tain­ty for the out of pla­ne mea­su­re­ment data in Z‑direction with dif­fe­rent speck­le patterns.

 

 

In order to pro­vi­de con­sis­tent speck­le pat­terns for various sam­ple sizes and mate­ri­als, the speck­le kit inclu­des:

 

Stamp Rol­lers (6 sizes):

  • 0,18mm dot size for 53 – 145mm FOV*
  • 0,33mm dot size for 102 – 296mm FOV*
  • 0,66mm dot size for 203 – 539mm FOV*
  • 1,27mm dot size for 389 – 826mm FOV*
  • 2,45mm dot size for 762 – 2032 mm FOV*
  • 5,08mm dot size for 1524 – 4064 mm FOV*

Flat Stamp Rockers 146 x 146mm (6 sizes)

  • 0,18mm dot size for 53 – 145mm FOV*
  • 0,33mm dot size for 102 – 296mm FOV*
  • 0,66mm dot size for 203 – 539mm FOV*
  • 1,27mm dot size for 389 – 826mm FOV*
  • 2,45mm dot size for 762 – 2032 mm FOV*
  • 5,08mm dot size for 1524 – 4064 mm FOV*
  • Rocker for Flat Stamps

Access­ories:

  • extra ink
  • ink pad
  • hard pad­ded car­ry­ing case

 

* recom­men­ded FOV (image width) for stan­dard 5Mpx sen­sor with 2500x2000px. Alter­na­tively check dot size, which should be mini­mum about 3x3px.

 

For fur­ther infor­ma­ti­on, a quo­ta­ti­on or in case of any ques­ti­ons, plea­se don’t hesi­ta­te to con­ta­ct us via info@isi-sys.com

Polarization filter for HEDLER LED

NEW! The new isi-sys polarization filter for HEDLER LED

The major rea­son for app­ly­ing light forming equip­ment in DIC is to avoid direct reflec­tions. The HEDLER Pro­fi­lux LEDs can be equip­ped with dif­fe­rent light forming access­ories such as usual­ly app­lied in con­ven­tio­nal pho­to stu­di­os. Some of them are also sui­ta­ble for DIC. isi-sys can recom­mend sui­ta­ble access­ories for your application.

Howe­ver the first basic recom­men­da­ti­on is to set up the light source inde­pendent­ly from the DIC sys­tem to adjust a sui­ta­ble illu­mi­na­ti­on direc­tion. In a num­ber of app­li­ca­ti­ons this is suf­fi­ci­ent and the­se access­ories can be avoided, which is of advan­ta­ge, becau­se their app­li­ca­ti­on is com­bi­ned with light losses.

A high­ly recom­men­ded item is the new isi-sys pola­riz­a­ti­on fil­ter espe­cial­ly deve­lo­ped for the high power Hed­ler LED 1000, which hel­ps to work on stron­gly cur­ved and shiny – even wet – sur­faces, when com­bi­ned with sui­ta­ble pola­ri­sa­ti­on fil­ters on the DIC ste­reo system

HEDLER LED light sources

isi-sys offers various light sources from Hed­ler, in par­ti­cu­lar the fol­lowing pro­ducts, for which we also offer a pola­riz­a­ti­on fil­ter spe­cial­ly deve­lo­ped by us (read more»):

 

LED 1000

Focus­able white LED light source with 185W, con­ti­nuous wave

 

 

The HEDLER Pro­fi­lux LED1000 is a new deve­lo­ped con­ti­nuous light unit which gene­ra­tes with one high power sin­gle LED day­light qua­li­ty with approx. 5600K and a CRI > 90 – fli­cker-free! It has an extre­me­ly quiet fan coo­ling and a spe­cial, acti­ve LED coo­ling; the LED has an average life­time of approx. 50000 hours.

It comes with:

  • Fres­nel lens
  • 185 Watts high power sin­gle cell LED
  • Inte­gra­ted Elec­tro­nic Ballast
  • U‑bracket with 5/8″ quick-lock light stand attach­ment and fric­tion bra­ke plus the HEDLER Quick­Fit adap­ter for com­for­ta­ble and fast inter­ch­an­ging of reflectors.

 

 

LED 650

70° expan­ded white LED light source with 75W con­ti­nuous wave

 

 

LED 1000x

75°expanded white light source with 185W con­ti­nuous wave

 

Note: The LED 650 and 1000x are only recom­men­ded for lar­ge FOV >1m app­li­ca­ti­ons at short object distan­ces for cost rea­sons. Ope­ra­ti­on with sepa­ra­te light stand or tri­pod recom­men­ded, as without focu­sing such as for LED 1000.

Blue-X-Focus — LED light source

The new LED light source with 80W up to 120Hz and 1μs flash period

The Blue-X-Focus is a powerful LED light source, especially designed by isi-sys for digital image correlation:

  • The short, sin­gle wave length (blue) impro­ves the opti­cal trans­fer func­tion pro­per­ties espe­cial­ly a) at the image boar­ders for con­ven­tio­nal len­ses and b) for high reso­lu­ti­on, small FOV set-ups such as the Micro 3D ste­reo sensor.
  • The pul­se mode redu­ces moti­on blur and maxi­mi­zes light power at lowest pos­si­ble hea­ting of the object surface
  • Lar­ge beam expan­si­on ran­ge from 3,2° to 60° for small to lar­ge field of view. Ope­ra­ti­on through small windows
  • A pola­riz­a­ti­on-fil­ter (optio­nal) is sup­pres­sing direct reflec­tions in com­bi­na­ti­on with a second pair for the sensors
  • The short wav­elength can be used in com­bi­na­ti­on with band­pass fil­ters for mea­su­ring on hot samples

Further details:

  • Power: Stan­dard ope­ra­ti­on with 80W in con­ti­nuous mode or 120W for pul­se mode depen­ding on duty cycle. Examp­le for 0,7 duty cycle: 105W @ 240Hz and 2,9ms flash peri­od. Power adjus­ta­ble manu­al­ly or exter­nal by pul­se length and fre­quen­cy as well as auto­ma­ti­cal­ly limi­ted depen­ding on temperature.
  • The focu­sing adap­ter for stan­dard DIC is from 5° to 60° expan­si­on. The ver­si­on for small FOV is adjus­ta­ble from 3,2° to 4,7° expan­si­on cor­re­spon­ding to e. g. 5mm x 3mm at 53mm WD or 300mm x 140mm at 1800mm WD (working distance)
  • Moun­ting is pos­si­ble hori­zon­tal or ver­ti­cal via M6 or ¼” threads
  • The coo­ling air stream is direc­ted from the front inlet to the backside to avoid hot air waves in the images.Power: Stan­dard ope­ra­ti­on with 80W in con­ti­nuous mode or 120W for pul­se mode depen­ding on duty cycle. Examp­le for 0,7 duty cycle: 105W @ 240Hz and 2,9ms flash period.

Application example for DIC on small FOV (magnification 1:1 approx. 14x10mm @ 12Mpx, Rodagon 135mm)

DAQ Devices

The isi-sys DAQ devices are set up for ope­ra­ti­on with the Vic soft­ware for Digi­tal Image Cor­re­la­ti­on (DIC) by Cor­re­la­ted Solu­ti­ons and func­tion as inte­gral part of isi-sys turn-key DIC sys­tems. They main­ly ser­ve for trig­ge­ring the came­ras (hard­ware trig­ger) and simul­ta­ne­ous­ly record­ing ana­log data as well as for deli­vering ana­lo­gue real-time out­put gene­ra­ted by the Vic-Gau­ge software.

The­re are three DAQ types with dif­fe­rent per­for­mance and fea­tures (and pricing):

 

DAQ-STD-8D

Only the DAQ-STD- 8D Syn­chro­niz­a­ti­on- / Trig­ger Device can be used for syn­chro­niz­a­ti­on of the came­ras via a perio­dic signal (sup­por­ted by the Ful­crum Modu­le of Vic-Snap or the isi-sys syn­chro­ni­sa­ti­on soft­ware modu­le / isi-Studio

 

 

 

 

 

DAQ-T8D-16

 

Isi-sys also offers a 16-bit device — the DAQ-T8D-16. Both devices have +/-10V out­put channels.

 

 

 

 

 

 

DIC-DAQ-Box-klein
The DAQ-T4D-12 is a 12bit device with 5V ana­log output

 

 

 

 

 

 

 

Camera Trigger & Power supply

Hard­ware trig­ge­ring and the power sup­ply for the came­ras are trans­mit­ted via the 12-pin Hiro­se con­nec­tors on the DAQ device. Two of the­se con­nec­tors are avail­ab­le for con­nec­ting up to two came­ras. Isi-sys also offers Y‑cables for ope­ra­ting 4 came­ras (two ste­reo sys­tems) or more. It is also pos­si­ble to ope­ra­te more than two came­ras with one DAQ device. We will be hap­py to advi­se you.

 

Computer Connection 

Con­nec­tion to a com­pu­ter is done by USB cable (type A <-> type B connector).

 

Analog inputs

isi-sys DAQ devices are avail­ab­le with eit­her dif­fe­ren­ti­al or non-dif­fe­ren­ti­al ana­log inputs. The ana­log input con­nec­tors are BNC type, the ran­ge is +/-10V.

 

Further IO connectors

Bes­i­des ana­log inputs, all isi-sys DAQ devices can also be equip­ped with ana­log out­puts (BNC type con­nec­tor), which dif­fer in vol­ta­ge ran­ge depen­ding on DAQ type. Digi­tal IO con­nec­tors (BNC type) are avail­ab­le as well.