def test_fatigue_life(self):
sncurves.compliance("2012.10")
for item in self.data:
f = sncurves.get_sn_curve(item["curve"],
seawater=item["seawater"],
cp=item["cp"])
expected = item["n"]
sigma = item["sigma"]
t = item["t"]
self.assertAlmostEqual(f(sigma, t=t),
expected,
delta=1.0,
msg="\nTEST ITEM = {}\n{}".format(
item, f.params))
if item["t"] <= 25.0:
# For t <= 25 it should be ok to skip argument *t*
self.assertAlmostEqual(f(sigma),
expected,
delta=1.0,
msg="\nTEST ITEM = {}\n{}".format(
item, f.params))
elif f.params.k != 0:
# For t > 25 and k != 0 the result should be incorrect
# if argument *t* is omitted
self.assertNotEqual(np.round(f(sigma)),
round(expected),
msg="\nTEST ITEM = {}\n{}".format(
item, f.params))
def test_scf(self):
sncurves.compliance("2012.10")
sn = sncurves.get_sn_curve("T", seawater=True, cp=True)
self.assertEqual(sn(1000), sn(100, scf=10))
# For curve T the thickness effect factor k changes for scf > 10
self.assertNotEqual(sn(1000, t=50), sn(10, t=50, scf=100))
def test_scf(self):
sncurves.compliance("2014.06")
sn = sncurves.get_sn_curve("T", seawater=True, cp=True)
self.assertEqual(sn(1000), sn(100, scf=10))
# For curve T the thickness effect factor k changes for scf > 10
self.assertNotEqual(sn(1000, t=50), sn(10, t=50, scf=100))
def test_fatigue_life(self):
sncurves.compliance("2012.10")
for item in self.data:
f = sncurves.get_sn_curve(item["curve"], seawater=item["seawater"], cp=item["cp"])
expected = item["n"]
sigma = item["sigma"]
t = item["t"]
self.assertAlmostEqual(f(sigma, t=t), expected, delta=1.0,
msg="\nTEST ITEM = {}\n{}".format(item, f.params))
if item["t"] <= 25.0:
# For t <= 25 it should be ok to skip argument *t*
self.assertAlmostEqual(f(sigma), expected, delta=1.0,
msg="\nTEST ITEM = {}\n{}".format(item, f.params))
elif f.params.k != 0:
# For t > 25 and k != 0 the result should be incorrect
# if argument *t* is omitted
self.assertNotEqual(np.round(f(sigma)), round(expected),
msg="\nTEST ITEM = {}\n{}".format(item, f.params))